Examples of extreme weather that occurs in unusual places
Answers
Answer:
it rains fish in Venezuela for a month or two of the year.
Related Questions
Which is the larger country?
a. French Guiana
b. Venezuela
c. Suriname
d. Guyana
dont judge me for not knowing
Answers
Answer:Venezuela
Explanation:
Answer:
Venezuela is the Larger country from the category above.
Fill in the Blank Correctly complete the statement with the appropriate term. The purpose of sustainable agriculture is to reduce our dependence on resources.
Answers
Answer:
non renewable
Explanation:
The main aim of sustainable agriculture is to reduce the dependency on the non renewable resources by the people.
Sustainable agriculture is a farming technique in a sustainable way. Agriculture and farming always places high pressures on the natural and non renewable resources and environment. The practices of sustainable farming aims to protect the environment, it tries to expand earth's natural resource base, is good for environment, people and the animals. It is meant for building healthier and fertile soils.
Answer:
non-renewable, props to the other guy
Mountain goats like the one in the photo above can be found in the __________ ecosystem. A. highlands B. chaparral C. desert D. tundra
Answers
Answer:
A
Explanation:
Mountain goats live in the mountains. And highlands are kind of like mountains. ✌️
Answer:
Yes the answer is A. because the highlands are like mountains so the person above me was right!!
Explanation:
Here is the picture on the test
Name the ore of aluminium.write the names of any four countries where it is mined.
Answers
Australia
China
Guinea
Brazil
Answer:
The chief ore of aluminium is Bauxite. The four countries where aluminium is found are China, Russia, Canada, and U.S.A
Explanation:
Which statement best explains why Iceland has so many active volcanoes?
A Iceland overlies a boundary between two tectonic plates that are colliding.
B Iceland overlies a boundary between two tectonic plates that are moving apart
C Iceland is on a single tectonic plate and is far from any plate boundaries.
D Iceland is on a single tectonic plate that is moving under another plate.
Answers
Answer:
B - Tectonic Plates Moving Apart
Explanation:
This land is situated on the Mid Atlantic Ridge across the Eurasian and North American tectonic plates. There is a higher propensity for volcanoes as these tectonic plates are moving apart.
Worldwide, the largest percentage of freshwater readily available to humans is stored in _______.
Answers
The gap spaces between the rocks and sediments are where the majority of the freshwater that is easily accessible to humans is kept. Thus the answer is a. pore spaces between rocks and sediments.
The largest percentage of freshwater that is stored in pore spaces between rocks and sediments are readily available to humans. The groundwater is the liquid freshwater that exists within sediments and rocks under the Earth's surface. The unsaturated zone contains the pore spaces in sediments, rocks, and soils that are only partially saturated with water.
Glaciers are the only other major source of freshwater storage after the ground. This is not the correct answer.
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Worldwide, the largest percentage of freshwater readily available to humans is stored in _______.
a. pore spaces between rocks and sediments
b. the oceans
c. lakes
d. reservoirs
e. glaciers
Which of the following is not a basic feature of a map?
Answers
Answer:
what am I supposed to be looking at
¿QUE DIFERENCIAS Y SEMEJANZAS EXISTEN ENTRE LOS PROBLEMAS QUE ENFRENTAN LOS JOVENES DE DISTINTAS PARTES DEL MUNDO?
Answers
Answer:
Problemas similares debido a fases de vida similares, mientras que diferentes problemas debido a diferentes entornos.
Explicación:
Las personas de diferentes partes del mundo experimentan la mayoría de problemas similares porque pasan por el mismo período de su vida, mientras que algunos problemas diferentes también se presentan en la vida de las personas que viven en diferentes partes del mundo debido a diferentes tipos de condiciones ambientales, por lo que podemos Concluimos que las personas que viven en diferentes partes del mundo experimentan problemas tanto similares como diferentes.
think and discuss: water covers over two-thirds of earth’s surface. yet water shortages are a major problem for many people around the world. why do you think this is the case?
Answers
This is because the most of the water is available in the form of seas and ocean which is salty in nature.
Write the forms of water.three form of water are-
water in solid form-Water can be found in solid form on Earth in the form of ice caps, glaciers, snow, etc. There is a tiny amount of water in the form of sol.
water in liquid form-Liquid water makes up a sizable fraction of the overall amount of water on planet. The main sources of liquid water include the oceans, seas, lakes, rivers, rain, and groundwater. Sea and ocean water is quite salty by nature.
Water in the Vapor State-Very little water is found in the form of vapour. The main sources of water in the vapour form include clouds, soil moisture, and atmospheric vapour. Most of the time, water is found as vapour in the troposphere.
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Speaker 1 - Man in blue shirt
Speaker 2 - Man in yellow shirt
View the image above and observe the nonverbal communication of both speakers. What messages are these speakers conveying? Use at least 5 specific examples to discuss the messages conveyed by their appearance; their posture, gestures and movement; as well as their eye contact and facial expressions.
Answers
Answer:
In the image it looks like it is showing that blue shirt is inviting yellow shirt to an activity but, yellow shirt does not like the idea.
The man in the blue shirt's posture is like convincing yellow shirt .Yellow shirts facial expression is not happy so we can tell he is not with the idea. Yellow shirts posture is tight and stiff showing that he will not move and is refusing blue shirts suggestion. Blue shirt's facial expression in not giving up to try to convince yellow shirt. The red background sets the mood of anger or refusal.
Explanation: I hope I helped home slice.
Number one. Why you ask? Because the women in number one is clearly more engaging in her speech than the man in number two. The women in section one would be easier to understand because she is paying more attention to her audience. The man in number two was looking at the ceiling and seemed like he'd rather be anywhere else than here giving his presentation.
Correct on Edge. High school. Hope this helps :]
short term changes in atmospheric variables such as temperature, wind, precipitation, and barometric pressure over a given area and period of days are an example of:
Answers
The short term changes in atmospheric variables such as temperature, wind, precipitation, and barometric pressure over a given area and period of days is an example of weather patterns.
Weather patterns are the result of large scale movement of air masses and their interaction with other meteorological factors. They determine the type of weather, like sunny days or rainy days, that a given area experiences over a period of days.
Weather patterns are formed when areas of high and low pressure interact. Air moves from areas of high pressure to areas of low pressure, creating an airflow pattern. The temperature, wind, precipitation, and barometric pressure all are affected by this airflow pattern.
Changes in these atmospheric variables depend on the strength of the pressure system and its movement. When the pressure system is strong and stationary, there is little change in the weather pattern. However, when the pressure system is weak and moving, the atmospheric variables will be more volatile.
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Which of the following is an example of convection?(1 point)
Heated spoon in a pot of macaroni on the stove.
Pressing clothes using a hot iron.
Ocean currents redistributing heat.
Warming your hands by the fire.
Answers
Answer:
Ocean currents redistributing heat.
Explanation:
Convection is the transfer of thermal energy through a fluid by means of bulk movement of the fluid itself. Option 3 is the only option that involves fluid. The first 2 options are by conduction and the last option is by radiation I think.
Hope this helps
HELP ASAPPPP PLEASEEE
PLEASE
Answers
**What are the precise coordinates?**
49.7239196, 8.4102347
**What time is it right now?**
As i’m writing this question it’s 5:14 PM.
**What country is the location in?**
Germany
**What continent is the location on?**
Europe
**On which quadrant of the globe is the location found**
Well, it’s north of the equator (Northern/Southern hemispheres) and east of the prime meridian (Eastern/Western hemispheres) so it’s in the Northern and Eastern hemispheres
Hope this helps
When "Just-in-Time" Falls Short: Examining the Effects of the Suez Canal Blockage
A six-day hold-up on the Suez Canal, set in motion by a stuck container ship that blocked passage on one of the world’s busiest waterways, had experts rethinking the "just-in-time" approach that has come to define modern supply chain strategy. The Suez Canal blockage only further exposed vulnerabilities in the just-in-time technique that had been revealed as the COVID-19 pandemic disrupted supply chains around the world for the better part of 2020. This case looks at the blockage and asks students to discuss whether it points to any needed changes in supply chain models.
The 200,000-ton container ship that blocked Egypt’s Suez Canal for six days in March 2021 brought to a halt one of the world’s busiest waterways and left more than 400 ships stranded. The Empire State Building-sized vessel, named Ever Given, ran aground in a single-lane stretch of the canal that connects the Mediterranean to the Red Sea. Built in 1869, the Suez Canal is the shortest maritime route from Asia to Europe.
High winds and a sand storm were early explanations given for the blockage; however, Egypt’s Suez Canal Authority chairman said weather conditions "were not the main reasons" and "there may have been technical or human reasons," the BBC reported. The waterway carries over 10% of global trade, including 7% of the world’s oil. The Ever Given blockage was yet another wake-up call for companies whose business models rely on supply chains with little room for error, as Milken Institute Chief Economist William Lee told the Associated Press.
"This is a warning about how vulnerable our supply chains are and how the just-in-time inventory techniques that have been so popular have to be rethought," he continued.
Suez Canal Authority chief Osama Rabie said that the canal’s revenues lost USD 14–15 million each day it was blocked. A study by German insurer Allianz showed that the blockage could cost global trade USD 6–10 billion per week. The incident is the latest warning to retailers that "just-in-time" supply chain models have backfired during the pandemic. As New York Times reporter Peter S. Goodman describes, in recent decades, management experts have championed "just-in-time" manufacturing to cut costs and increase profits. Instead of spending money filling warehouses with excess product, that money "can be given to shareholders in the form of dividends," he writes.
But over the last year, with factories shut down and trade restrictions put in place, shortages of pharmaceuticals, face masks, and other products highlighted the weaknesses of those strategies. A report by Capgemini Research Institute found that two-thirds of retailers plan to overhaul their supply chain strategy over the next three years. While the disruption from the Suez blockage was not as dramatic as the pandemic shortages, it was yet another reminder of the global supply chain shortcomings.
Why Is It News?
When consumer spending shifted from restaurants and gyms to imported goods for our new at-home lives, the shift happened faster than retailers could predict. This abrupt change strained the shipping industry, with the cost of shipping a container of goods from China to the United States doubling since November 2020. The ships halted for six days in March 2021 contained oil, electronics, semiconductors—of which there is a severe shortage—and vast quantities of goods that are keeping shoppers stuck at home occupied.
While the "just-in-time" approach to supply chain management produced larger profits, companies are now having to rethink their strategy as they have been left vulnerable. But economists are saying that while the blockage may be a costly headache, it will not "make or break the global economy," as Gregory Daco, chief U.S. economist for Oxford Economics, told the Washington Post . Also, as more people become vaccinated against the virus and return to restaurants and theaters, fewer goods may need to be shipped from Asia. Torsten Slok, chief economist for Apollo Global Management, echoes Daco. "From a macro perspective, this is a temporary kink in the supply chain," he said.
Research about the Suez Canal Blockade and write a paper that must address the following:
What have both the pandemic and the Suez Canal blockage revealed about vulnerabilities in the "just-in-time" technique?
How do you think these vulnerabilities ought to be addressed?
In a post-pandemic world, do you think companies need to be better prepared in general for continued disruptions?
Answers
Both the pandemic and the Suez Canal blockage have exposed vulnerabilities in the "just-in-time" technique used in supply chain management.
The pandemic highlighted the risks of relying on lean and efficient supply chains with minimal inventory buffers. When the global health crisis hit and lockdown measures were implemented, factories were shut down, transportation was disrupted, and trade restrictions were put in place. This led to shortages of essential goods such as pharmaceuticals, face masks, and other critical products. The "just-in-time" approach, which aims to minimize inventory and streamline operations, proved to be fragile and unable to cope with the sudden shifts in demand and disruptions to the supply chain.
Similarly, the Suez Canal blockage demonstrated the potential impact of a single event on global supply chains. The six-day hold-up caused by the stuck container ship resulted in over 400 ships being stranded and significant disruptions to global trade. It highlighted the vulnerability of relying on a single transportation route and the lack of redundancy in supply chain systems.
These vulnerabilities in the "just-in-time" technique need to be addressed to enhance supply chain resilience. Here are some potential strategies:
Diversification of suppliers and transportation routes: Companies should consider having multiple suppliers and alternative transportation routes to reduce dependency on a single source or route. This diversification can help mitigate the impact of disruptions and provide more flexibility in the face of unexpected events.
Building inventory buffers: While maintaining lean inventory levels is cost-effective, companies should also consider having strategic inventory buffers for critical components or essential goods. This can help alleviate the impact of supply disruptions and ensure a more reliable flow of goods during times of crisis.
Enhanced risk management and scenario planning: Companies need to invest in robust risk management strategies and conduct scenario planning exercises to anticipate and prepare for potential disruptions. This includes assessing vulnerabilities in the supply chain, identifying potential risks, and developing contingency plans to mitigate those risks.
Collaboration and transparency: Building strong partnerships with suppliers, logistics providers, and other stakeholders in the supply chain is crucial. Collaborative efforts can enable better communication, information sharing, and coordination during disruptions, allowing for more effective response and recovery.
In a post-pandemic world, it is evident that companies need to be better prepared for continued disruptions. The pandemic has served as a wake-up call, emphasizing the importance of resilience and adaptability in supply chain management. Companies should proactively invest in building robust and flexible supply chain systems that can withstand unforeseen events, whether they are health crises, natural disasters, or other disruptions.
By incorporating lessons learned from the pandemic and events like the Suez Canal blockage, companies can enhance their ability to respond to future challenges, minimize disruptions, and maintain a reliable supply of goods and services. It is essential to strike a balance between efficiency and resilience, taking into account potential risks and uncertainties in the global operating environment.
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What is the moon mostly made of? *
Ingenious rock
Liquid magma
Dried out soil
Sedimentary rock
Answers
In a mountain range, one would expect to find: A) that the daily temperature variation increases with altitude B) that the mean daily temperature decreases with altitude C) that the mean daily temperature increases with altitude D) both A ) and B) above Maximum daily air temperature usually occurs at approximately ... A) noon. B) 1 p.m. C) 3 p.m. D) 6 p.m.
Answers
In a mountain range, one would expect to find that the mean daily temperature decreases with altitude, and the daily temperature variation increases with altitude. Option D) both A) and B) above are correct.
Maximum daily air temperature usually occurs at approximately noon. Temperature and altitude are two main physical variables that change according to the height of the mountain. Temperature decreases with altitude because of the reduction in air pressure.
In the troposphere, the air temperature drops at a rate of approximately 6.4 degrees Celsius per kilometer, making it cooler at higher altitudes compared to the low altitudes where the temperature is higher. The temperature variation (the difference between the maximum and minimum temperature) increases with altitude.
In the mountains, temperatures are highly variable and change quickly in response to the changing atmosphere. In addition to this, the amount of direct sunlight received at higher altitudes is more, and the air is thinner. This makes the temperature fluctuation more significant.
Maximum daily air temperature usually occurs at approximately noon, when the sun's rays are almost perpendicular to the earth's surface. The temperature increases slowly from the start of the day, peaks in the afternoon, and then declines until it reaches its lowest point at night. Here option D is the correct answer.
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relative location of bismarck, dakota
Answers
Bismarck, Dakota is located in the central region of the United States, specifically in the state of North Dakota. It is situated along the eastern bank of the Missouri River.
1. Start by identifying the state: Bismarck is located in Dakota, which refers to North Dakota.
2. Locate Bismarck within North Dakota: Bismarck is situated in the central part of the state.
3. Determine its position along the Missouri River: Bismarck is found along the eastern bank of the Missouri River.
4. Note the geographical significance: Being situated near the Missouri River provides Bismarck with access to water transportation and recreational activities.
5. Understand the regional context: Bismarck is the capital city of North Dakota and serves as an important economic and cultural hub for the region.
6. Recognize neighboring areas: The city is surrounded by the Great Plains and is in proximity to other notable cities such as Fargo and Grand Forks.
7. Consider transportation connections: Bismarck is accessible through major highways, including Interstate 94, which connects it to other cities in North Dakota and neighboring states.
8. Acknowledge the natural surroundings: The area around Bismarck features a diverse landscape, including rolling hills, prairies, and the nearby Badlands National Park.
9. Take note of local attractions: Bismarck is home to various landmarks, including the North Dakota State Capitol, the Dakota Zoo, and Fort Abraham Lincoln State Park.
10. Summarize the relative location: In conclusion, Bismarck, Dakota is positioned centrally in North Dakota along the eastern bank of the Missouri River, surrounded by the Great Plains and offering access to both natural beauty and urban amenities.
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HELP!! 100 POINTS AND BRAINLIEST!!!
Choose three possible solutions to the problem. (immigration to the us). Briefly compare and contrast the advantages and disadvantages associated with these solutions. In the table below note three advantages and disadvantages for each solution. BE sure to use research to support your claims.
Answers
Answer:
What are the advantages and disadvantages of immigration?
Immigration can give substantial economic benefits – a more flexible labour market, greater skills base, increased demand and a greater diversity of innovation. However, immigration is also controversial. It is argued immigration can cause issues of overcrowding, congestion, and extra pressure on public services.
Explanation:
what has accelerated the ordinarily slow flux of carbon from sedimentary rocks to the atmosphere?
Answers
The reason for slow flux of carbon from sedimentary rocks to atmosphere can be changes in ocean temperatures and currents.
What causes carbon flux ?
It is created by the burning of carbon and carbon-containing materials (including biomass and fossil fuels), animal and plant respiration, the progressive oxidation of organic matter in the soil, and chemical reactions with certain geological components.
Carbon exchange between the seas, atmosphere, land, and living organisms is known as a carbon flux, and it is commonly measured in gigatonnes of carbon per year (GtC/yr).
A gigatonne is a huge quantity of mass, equivalent to nearly 200 million elephants or roughly double the mass of all people on Earth combined!
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Which of the following countries had the longest civil war?
Liberia
Ethiopia
Democratic Republic of Congo
Angola
Answers
Answer:
Angola had the longest civil war
Option (a)
The impending independence of one of those colonies, Angola, led to the Angolan civil war that grew into a Cold War competition. ... The National Union for the Total Independence of Angola (UNITA), an offshoot of the FNLA, was led by Jonas Savimbi and supported by the country's largest ethnic group, the Ovimbundu
Which landform Is found west of the Mississippi River in the United States?
A. Rainforest
B. taiga
C. costal plain
D. plains
Answers
Answer:
The correct answer is D.
Which of the following natural resources would be mined?
gemstones
petroleum
water
sea salt
Answers
Answer:
The answer is gemstone.
Which results should occur if climate change leads to increased warming global temperatures?
Answers
Several outcomes may occur if climate change causes an increase in world temperatures:
Melting of Glaciers and Polar Ice CapsExtreme Weather EventsOcean AcidificationChanges in EcosystemsPublic Health ImpactsEconomic ImpactsThe outcomes will affect the surroundings as follows:
Melting of Glaciers and Polar Ice Caps: Glaciers and polar ice caps may melt as a result of warming temperatures, which would result in higher sea levels and more flooding.
Extreme Weather Events: Heatwaves, storms, and droughts can all become more common and severe as a result of climate change.
Ocean Acidification: Ocean acidification, which harms marine life, can result from the atmosphere's increased absorption of carbon dioxide.
Changes in Ecosystems: Climate change may alter ecosystems, resulting in biodiversity loss and a shift in species distribution.
Public Health Impacts: The health effects of climate change may include increased cases of heatstroke, respiratory conditions, and the spread of infectious infections.
Economic Impacts: Increased insurance costs, infrastructure damage, and decreased agricultural productivity are just a few of the adverse economic effects of climate change.
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Why did the South fall behind the North in terms of progress?
O A. The North treated African Americans with full equality,
O B. Southern society was traditional and based on farming,
O c. Women could not vote in the South but could in the North,
O D. People in the South did not believe in progress.
CII
Answers
Answer:
Southern society was traditional and based on farming.
Explanation:
Answer:
B. Southern society was traditional and based on farming
Explanation:
The north was a lot more involved in railroads, technology, etc. than the south during the industrial revolution. While the north had tons of factories and mechanical inventions, the south was more traditional, and used farming as their main mean of income, which made them more poor than the north. Because of their traditional values, they fell behind.
Why do some versions of Shakespeare plays differ from others?.
Answers
The versions of Shakespeare's plays can differ due to several factors. They are as follows: 1. Authorship. 2. Editing and Adaptation. 3. Performance and Interpretation. 4. Historical Context.
The versions of Shakespeare's plays can differ due to several factors. They are under-listed:
1. Authorship: Some plays attributed to Shakespeare may have been co-written or revised by other playwrights, such as Thomas Middleton. These collaborations can result in variations in the text and overall structure of the play.
2. Editing and Adaptation: Over time, different editors and adapters have made changes to the original texts of Shakespeare's plays. These changes can include cutting or rearranging scenes, altering language, or updating cultural references to make the plays more accessible to contemporary audiences.
3. Performance and Interpretation: Shakespeare's plays are meant to be performed, and each performance is a unique interpretation of the text. Directors, actors, and designers make artistic choices that can influence the staging, costumes, and overall presentation of the play. These choices can lead to variations in the way the play is experienced and understood.
4. Historical Context: Shakespeare's plays were written during a time of political and social change. Different productions may emphasize different aspects of the plays to reflect the concerns and interests of their specific historical moment. For example, a production in the 19th century may highlight themes of Victorian morality, while a modern production might focus on issues of race, gender, or globalization.
In conclusion, the versions of Shakespeare's plays can differ due to authorship, editing and adaptation, performance and interpretation, and historical context. These factors contribute to the richness and diversity of Shakespeare's work, allowing for new perspectives and insights with each new production.
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I NEED HELP RIGHT NOW!!!!
a. What do you notice when you compare the climate at two places at the same latitude? Were they the same? Or were there differences?
b. If there were differences, what were they?
If you did notice differences, what do you think accounts for these differences? (In other words, what do you think would cause these differences?)
Answers
Answer:
These three cities are at the same latitude. They are San Francisco, California; Wichita, Kansas; and Virginia Beach, Virginia. Proximity to the ocean is important. Also important is the direction the winds are blowing at this location.
Oceans and Climate
When a place is near an ocean, the water can have a big effect on the climate.
Coastal and Inland Climates
Places at the same latitude may have very different climates if one is on a coast and one is inland.
On the coast, the climate is influenced by warm moist air from the ocean. A coastal climate is usually mild. Summers aren’t too hot, and winters aren’t too cold. Precipitation can be high due to the moisture in the air. This is a maritime climate.
Farther inland, the climate is influenced by cold or hot air from the land. This air may be dry, because it comes from over land. An inland climate is usually more extreme. Winters may be very cold, and summers may be very hot. Precipitation can be low. This is a continental climate
sallys teacher asked her to classify the organisms in a sample of pond water. sally believed that they all belonged in the same kingdom but there were both unicellular and multicellular organisms. sally could be correct. the organisms could belong tom the kingdom...
a. protista
b. animalia
c. plantae
d. fungi
Answers
In a case whereby Sallys teacher asked her to classify the organisms in a sample of pond water. sally believed that they all belonged in the same kingdom , sally could was incorrect. the organisms could belong to A. protista.
What is a protista?The Protista are a vastly complex order of eukaryotic creatures, most of which are unicellular. The majority of terrestrial, aquatic, and marine ecosystems contain them in both free-living forms and as parasites of other protists, fungi, plants, and animals. They have a wide variety of morphological features.
Any eukaryotic organism that is not an animal, plant, or fungus is referred to as a protist. The absence of other eukaryotes means that protists do not constitute a natural group, or clade, even though it seems likely that they all descended from a common ancestor.
Therefore, option A is correct.
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the owner has a large parcel of land surveyed into lots and streets and files a subdivision plat. by which method can each lot be legally described?
Answers
The owner has a large parcel of land surveyed into lots and streets and files a subdivision plat. Each lot can be legally described as Lot and block method.
Lot and block surveys are regularly done in heavily populated urban and suburban areas. The recorded map survey system and the recorded plat survey system are related terms. A technique for highlighting and identifying the location of a piece of land.
A large area of land that has already been described by another type of survey system, such as a metes and bounds description or the Public Land Survey System, is typically the starting point for the lot and block system. On a lot and block survey, the large parcel of land is then divided into smaller lots.
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true or false? using mortality rates as a sole criterion is the best known method to determine the size of a health problem.
Answers
The statement "Using mortality rates as a sole criterion is the best known method to determine the size of a health problem." is False because mortality rates are just one of the criteria used to determine the size of a health problem.
Mortality rates are only one factor considered when estimating the scope of a health issue. Other criteria might include incidence rates, disability-adjusted life years, and prevalence. Incidence rates refer to the number of new cases of a particular disease or health condition within a given population, disability-adjusted life years refer to the number of years lost due to disability or premature death, and prevalence refers to the number of affected individuals at a given point in time.
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PART II. INTRODUCTION TO NUCLEAR WASTE CASE STUDY OF YUCCA MOUNTAIN There are four types of nuclear waste: • high-level waste • low-level waste • transuranic waste (e.g. clothing, rags, equipment, tools, etc.) • mill tailings (leftover crushed rock) High-level waste is the most radioactive category of nuclear waste. It includes spent fuel (used fuel) from powerplants and defense activities. Pellets of uranium oxide are the fuel for most nuclear reactors. These solid pellets are sealed in metal tubes approx. twice the diameter of a pencil and about 12-13 feet long. The tubes are bundled together into fuel assemblies, each containing between 50-270 tubes. The assemblies are placed in reactors and kept there for approx. 3 years, depending on type of reactor. Then the assemblies become "spent fuel." (aka spent fuel rods) (reference: www.citizenalert.org) This waste is now in temporary storage awaiting disposal -- the question is....Where can it be stored forever? Many scientists agree that geologic disposal is the most desirable, safest, and most acceptable of permanently disposing of high-level radioactive waste. The U.S. Department of Energy was studying Yucca Mountain, Nevada as the most likely site to build a repository. 1. Radioactivity can be measured in units called Curies (1 Curie - 3.7x100 disintegrations/second). One key isotope to dispose of is Pu-239. This isotope of plutonium has a half-life of 24,000 years. It is estimated that there will be about 10 million curies of this isotope in existence in the year 2000, most generated by the production of nuclear 10 weapons. On the graph, illustrate the amount of Pu-239 remaining vs. time (assume no more is produced after the year 2000). About how many years will be required to reduce this inventory to 1 million Curies? Pu-239 Activity (10^6 curies) 0 20 100 120 40 60 80 Time (kyr)
Answers
Based on the graph provided, it will take approximately 14,000 years to reduce the inventory of Pu-239 from 10 million curies to 1 million curies.
This is because the half-life of Pu-239 is 24,000 years, meaning that it takes that amount of time for half of the original material to decay. After two half-lives, only 25% of the original material will remain, and after three half-lives, only 12.5% will remain, and so on.
Therefore, it takes many thousands of years for the activity level to decrease significantly. This highlights to the fact that the need for safe, long-term storage solutions for nuclear waste.
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