Two sedimentary structures that indicate a current are cross-bedding and ripple marks.
Cross-bedding and ripple marks are two common sedimentary structures that indicate the presence of a current in a sedimentary deposit. They are important features that geologists use to interpret the depositional environment of a sedimentary rock.
Cross-bedding refers to a pattern of inclined layers or beds within a sedimentary rock. These inclined layers are known as cross-beds and are formed by the migration of sediment under the influence of a current.
As the current flows over a sediment surface, it transports sediment grains along the bed and deposits them on the downstream side of obstacles, such as ripples or sand dunes.
Over time, these deposits form inclined layers that are tilted in the direction of the current. The angle of the cross-beds is a function of the velocity of the current, the size of the sediment grains, and the shape of the sediment bed.
Cross-bedding is a common feature in sandstones, but can also be found in other sedimentary rocks, such as siltstones and conglomerates.
Ripple marks, on the other hand, are small waves or undulations on the surface of a sedimentary deposit. They are formed by the oscillatory motion of water or wind over a sediment surface.
As the current flows over a sediment surface, it creates small waves that move sediment grains up the upstream side of the wave and deposit them on the downstream side.
This results in a series of small ridges and troughs that are aligned perpendicular to the direction of the current. Ripple marks are typically found in sandstones, siltstones, and mudstones, and can range in size from a few millimeters to several centimeters.
Both cross-bedding and ripple marks provide important information about the depositional environment of a sedimentary rock.
The angle and direction of cross-beds can be used to determine the direction and velocity of the current that deposited the sediment, while the size and shape of ripple marks can be used to estimate the strength of the current.
By analyzing these sedimentary structures, geologists can reconstruct the environmental conditions that existed when the sediment was deposited, such as the presence of rivers, beaches, or shallow seas.
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suggest two reasons why smoking tobacco has decreased in the uk
Answer:
Raising of the price of tobacco can be one reason of its decline as well as the rise of e-cigarettes can be one of it
How did the timing of General Washington’s attack on Trenton help ensure a colonial victory? He attacked when French officials were supplying the Continental army. He chose a day when the British would not be expecting to fight. He attacked in the winter, when armies usually did not fight. He chose a day when the British army was marching on a nearby town
He attacked when the French officials were supplying to the British army. He chose a day when the British that would not be expecting to fight on the Trenton help ensure a colonial victory
colonial victory by British armythat is in Between 1775 and the 1783, the Continental Army was fought numerous skirmishes and the minor engagements as well as the more than a dozen of the major full-blown set-piece battles against the British and the British army. The fledgling army and won slightly more than half of the battles ranging from the South Carolina to upstate New York. and Most men who served in the Continental Army were between the ages of around 15 and 30
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Answer:
D
Explanation:
can someone tell me why we are on earth?
Answer:
I think for we can have a better live because when living in the moon die because there are not oxygen
Explanation:
a forested slope is set to be logged. which method will reduce disturbance, such as erosion and pollution, of a stream at the base of the slope from excess sediment?
There are a few methods that can help reduce disturbance to the stream at the base of the forested slope that is set to be logged. One approach would be to implement Best Management Practices (BMPs) during the logging process, such as installing silt fences, using erosion control blankets, and creating diversion ditches. These BMPs can help to reduce erosion and the amount of sediment that enters the stream.
Additionally, leaving a buffer zone of unlogged trees along the edge of the stream can also help to reduce disturbance and protect the aquatic ecosystem. Another method could be to conduct selective logging, where only certain trees are removed rather than clearcutting the entire area. This can help to minimize the amount of soil disturbance and erosion that occurs.
Overall, implementing these methods can help to mitigate the impacts of logging on the stream and reduce the amount of excess sediment that enters the water.
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I live in a city with an urban POPULATION of over 8,000,000 people and a population density of over 100 people per square mile. The VEGETATION zone is broadleaf evergreen forest. The CLIMATE here is tropical wet and dry and tropical wet. I live near the Tropic of Capricorn. My dad WORKS in a factory and my brother is a commercial fisherman. I live along the coast of my country. The people LOVE soccer here and this country has even hosted the World Cup for soccer! In which CITY do I live?
Based on the information provided, it seems that you live in Rio de Janeiro, Brazil.
Rio de Janeiro has an urban population of over 8 million people and a population density of over 100 people per square mile. It is located near the Tropic of Capricorn and has a tropical wet and dry climate as well as a tropical wet climate, which is characterized by a distinct rainy season and a dry season. The vegetation zone in Rio de Janeiro is a broadleaf evergreen forest, which is also known as the Atlantic Forest.
Rio de Janeiro is located on the coast of Brazil and is well-known for its beaches, including the famous Copacabana Beach. The city is also famous for its soccer culture and hosted the World Cup for soccer in 1950. Your dad works in a factory, which is a common profession in Rio de Janeiro, and your brother is a commercial fisherman, which is also a common profession in coastal cities like Rio de Janeiro.
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When the wavelength increases, what is the object’s motion relative to Earth?
Answer:
When the wave length of spectral lines emitted from an object increases, which end of the visible light spectrum does it move toward, and what is the object's motion relative to Earth? The light spectrum it moves toward when an object increases is the red shift, and it is moving away from earth.
Explanation:
When the wavelength increases, the object motion also increases in its shift, and further starts moving away from the Earth. There is a direct relationship between the wavelength and the object motion.
What is the significance of object motion?Object motion can be referred to or considered as the movement of an object in the relation to the change in the wavelengths of the Earth. If the object motion causes a movement towards the Earth, it is called a blue shift, and if the movement is further, it is called a redshift.
There exists a direct relationship between the wavelength and the object motion of the Earth, which means that when the wavelength decreases, the object motion also decreases proportionately, and vice versa.
Therefore, the significance regarding an object motion has been aforementioned.
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Describe how one specific human activity can lead to increased phosphorus levels in an estuary ecosystem. Describe one step that could be taken to reduce the phosphoru inputs from the activity you described above.
Human activity can contribute to increased phosphorus levels in an estuary ecosystem through various pathways such as Agricultural Runoff, Urban Runoff, Wastewater Discharge, Industrial Discharges, etc.
The presence of too much phosphorus can cause eutrophication, which harms aquatic life and the health of the ecosystem as a whole by stimulating algal blooms and depleting the water's oxygen supply. Proper management techniques, such as appropriate fertilizer usage, enhanced wastewater treatment, and improved stormwater management, are essential to reduce phosphorus pollution and its detrimental impacts on estuaries.
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A mineral has a mass of 24
grams and a volume of 8 cubic
centimeters. What is the
density of the mineral?
Hint: d=m/v
A. 32 grams/cubic centimeter
B. 3 grams/cubic centimeter
C. 160 grams/cubic centimeter
D. 16 grams/cubic centimeter
The ideal decision is an option (b). The mineral has a density of 3 grams per cubic centimeter.
What is the geology of mineral density?The density of a mineral is a fundamental physical characteristic that depends on the composition and atomic arrangement of the material. Having an intrinsic attribute indicates that it applies to the mineral regardless of sample size or form.
Specific gravity, which measures the density of the rock about the density of water, is typically used to express the densities of rocks and minerals. Because water has a density of 1 gram per cubic centimeter, or 1 g/cm3, this isn't as difficult as you may imagine.
In the given question:
Mass= 24 grams
Volume= 8 cubic centimeters
Density= Mass / Volume
Density= 24 / 8
Density= 3 grams/cubic centimeter
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Someone please help with this .......... What are lateritic soils? The formation of lateritic soils in East Africa is a result of: A.Erosion B.Water logging C. Leaching D.Weathering
Answer:
lateritic soils are is rich in iron oxide and derived from a wide variety of rocks weathering under strongly oxidizing and leaching conditions.
the answer i think either leaching or weathering
Explanation:
compare the physical features of Canada with the place you live (california). In what ways is it the same? In what ways is it different? HELP PLS !!
Answer:
The United States and California are both among the largest countries in the world, and for this same reason, their geographies are very diverse, varying from region to region, and with very specific regional characteristics.
A common thing between these two countries is that both have coasts on the Atlantic, Pacific, and Artic Oceans. They also have their most important mountain ranges in the West, while the Eastern areas are mostly flat, with only the Appalachian Mountains in the U.S. being considered a proper mountain range.
The two countries also share the Great Lakes system, around which the most important Canadian city, Toronto, and the third largest American city, Chicago, are located.
In general terms, the main difference is that Canada is simply a much colder country. The northern parts of Canada are tundra where very few people live and where agriculture is not possible, while the Southern areas in the U.S. range from subtropical to tropical, with very large population, and an important agrarian economy.
which of the following hypothetical planets would you expect to have active tectonics, volcanism, and various forms of erosion?
A hypothetical planet that has active tectonics, volcanism, and various forms of erosion is expected to have geological processes. These processes lead to the creation of geological features like mountains, valleys, and craters.
The planet's age, size, distance from the star, and composition are important factors that affect geological activity. A planet's geological activity is also influenced by its internal heat sources, such as residual heat from its formation and radioactive decay.If the hypothetical planet is geologically active, it's likely to have a high amount of geological activity, which indicates that it is still undergoing the process of formation and evolution .
A planet that's too small may have a solidified core and no tectonic activity. The lack of internal heat means that the planet has no geothermal activity, such as volcanic eruptions. Such a planet has a cold and barren surface.A planet that's too large may have a thick atmosphere and high levels of atmospheric pressure. This pressure would crush the planet's surface and prevent the formation of geological features.
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if the earth were covered in water except for the north american continent, would there still be geostrophic gyres? if so, where? what would the current pattern be in the southern hemisphere?
Yes if the earth were covered in water except for the north american continent, would there still be geostrophic gyres.
The equatorial currents that run east to west along the equator are made by the trade winds.the currents in both the North and South equator.These surface currents would travel parallel to the equator all the way around the Earth if there were no continents.The circular ocean current known as a gyre is the result of the Earth's wind patterns and the forces exerted by the planet's rotation.If the Earth did not rotate on its axis, the atmosphere would simply move back and forth between the poles and the equator.
Water that accumulates on the eastern side of an ocean in the Southern Hemisphere moves north, and water that accumulates on the western side of an ocean in the Southern Hemisphere moves south.A large system of circular ocean currents known as an ocean gyre is the result of Earth's rotational forces and global wind patterns.
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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Move the place names to their correct locations on the map
yellow-
green-
gold-
lightblue-
Answer:
If you're asking what the biomes are, here:
Light Blue is Tundra
Light Green is Plains or Savannah
Dark Green is Rain Forest
Really Dark Green is Deciduous Forest
Yellow is Desert
Gold is... uh... dry plains or something like that?
Explanation:
I'm pretty good at geography. I can name all the major rivers, lakes, countries, biomes, and I can even label a map of the US from memory. It was a little hard to understand what you meant, so I hope this helps!
Answer:
yellow (light green) - Grasslands
green(dark) - Forest
gold (yellowish orange) - Desert
lightblue - Tundra
Explanation:
OWare
The majority of the urban population in Texas lives in the Interior Lowlands region.
(a) True
(b) False
The statement "The majority of the urban population in Texas lives in the Interior Lowlands region" is false as majority of the urban population in Texas doesn't lives in the Interior Lowlands region
The Interior Lowlands region of Texas does not house the majority of its urban residents. Texas's major cities are primarily found in other parts of the state. The largest cities in Texas including Austin, Dallas, Houston and San Antonio are dispersed across various geographical areas.
Dallas is in the North Central Plains, San Antonio is in the South Central Plains, and Austin is in the Edwards Plateau region. Houston is situated on the Gulf Coastal Plain. Although there are some urban areas in Texas Interior Lowlands, this is not where the majority of the urban population is concentrated.
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fossilized Archaeopteryx a) In which era did it appear? b) Why is it important as a fossil that "links" change between different groups of organisms? c) Using this recreation of Archeopteryx, what evidence can you see that relates to this connection?
Archaeopteryx first appeared in the Late Jurassic Period which is a geological era of the Mesozoic Era that lasted from about 163.5 to 145.5 million years ago. The fossilized remains of Archaeopteryx were discovered in 1861 in the region of Solnhofen in Germany.
Archaeopteryx is important as a fossil that "links" change between different groups of organisms because it has characteristics of both birds and reptiles, suggesting that birds may have evolved from reptiles. Archaeopteryx is considered a transitional form between non-avian dinosaurs and birds, possessing both reptilian and avian features.
It has a mix of features found in modern birds, such as feathers and wings, as well as features found in non-avian dinosaurs, such as teeth and a long, bony tail. This makes it a valuable specimen for scientists studying the evolution of birds.
Using the recreation of Archaeopteryx, some of the evidence that relates to the connection between birds and reptiles include: Feathers: Archaeopteryx had feathers, which are a characteristic feature of birds. However, these feathers were not as specialized as those of modern birds. They were asymmetrical and lacked hooks, barbs, and a central shaft.
This suggests that feathers may have evolved for purposes other than flight, such as insulation or display.Bird-like skull: Archaeopteryx had a bird-like skull, with a short snout and large eyes. However, it also had a reptilian feature - teeth in its jaws.
This is unlike modern birds, which have a beak instead of teeth. Reptilian tail: Archaeopteryx had a long, bony tail that was similar to that of non-avian dinosaurs. However, its tail was shorter and more flexible than that of its dinosaur ancestors. This suggests that the tail may have played a role in flight control, but was not used for balance while walking on the ground.
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Read the article Marine sediments tell it like it was (Links to an external site.) to construct a 1-page, typed (12-point), proofread (meaning college level) paper summarizing the importance of studying sediments for reconstruction of paleoenvironments AND using them to understand more recent human environmental impacts on environments. You should include additional sources used, and cite both in text and include a reference page; your submissions will be submitted to our college plagiarism filter, and no scores above 20% will earn credit.
Marine sediments tell it like it was
https://www.pnas.org/doi/10.1073/pnas.0708635104
Thank you!
Studying marine sediments is crucial for reconstructing paleoenvironments and understanding recent human environmental impacts. Sediments provide a wealth of information about past climate conditions, oceanographic processes, and the evolution of ecosystems. They serve as a record of environmental changes over time, helping scientists unravel Earth's history and predict future changes.
Marine sediments are valuable archives that hold vital information about Earth's past. By analyzing sediment cores collected from the ocean floor, researchers can reconstruct paleoenvironments and gain insights into the Earth's climatic history. Sediments contain various proxies, such as microfossils, isotopes, and trace elements, which provide clues about past temperatures, sea level changes, and ocean circulation patterns. This data helps scientists understand the natural variability of the climate system and identify long-term trends.
Additionally, studying marine sediments allows us to assess the impact of human activities on the environment. Industrialization, agriculture, and other human interventions have significantly altered ecosystems and affected the quality of marine environments. By examining sediment layers, scientists can trace the introduction of pollutants, such as heavy metals, pesticides, and hydrocarbons, into marine ecosystems. This information helps evaluate the extent of contamination, its sources, and its long-term effects on marine life and habitats.
Furthermore, sediment records can shed light on the effectiveness of conservation efforts and inform future environmental management strategies. By comparing sediment composition and ecological indicators before and after the implementation of conservation measures, scientists can evaluate their success in restoring degraded ecosystems. This knowledge is crucial for making informed decisions and developing sustainable practices to protect marine environments.
In conclusion, the study of marine sediments provides valuable insights into both paleoenvironments and recent human environmental impacts. By analyzing sediment cores, scientists can reconstruct past climate conditions, understand natural variability, and assess the consequences of human activities on marine ecosystems. This knowledge is essential for predicting future environmental changes, formulating effective conservation strategies, and ensuring the long-term sustainability of our planet.
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ank the following areas in order of largest to smallest change in average temperature since 1880. Question List (6 items) (Drag and drop into the appropriate area) Antarctic Ocean Australia western Europe eastern Pacific Ocean northern Canada southern Africa
Answer:
Measurements of air in ice cores show that for the past 800,000 years up until the 20th century, the atmospheric CO2 concentration stayed within the range 170 to 300 parts per million (ppm), making the recent rapid rise to more than 400 ppm over 200 years particularly remarkable [figure 3].
Explanation:
PLEASE HELP!!
Explain how changes in Brazil's societies over time have led to diverse uses of its physical features
Brazil has got a lot of cultural transformation due to the European immigrants who have come and settled in Brazil. Then due to the slave trade, many Africans have also come and settled in Brazil. All these have resulted in the diversification of the physical features of Brazil.
What are the physical features of Brazil?
Brazil is one of the physically richest countries in terms of resources. It has got a lot of varied characteristics. The physical features of Brazil are due to its locational exquisiteness. The most important thing about Brazil is that it is the largest country in South America.
The Brazilian landscape is very rich in natural resources. It has one of the largest rainforests the Amazon. The world's largest jungle is in the north. the physical features of Brazil also include a lot of animals, which have been staying in these lands for over some time. Brazil also has rugged lands as well as large acres of grasslands known as the pampas.
The physical features of brazil are all due to the anomaly in the weather conditions it has heat, rain, and also cold on its lands.
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What is World Earth Day? Why is it celebrated?
Essay
Explanation:
Every year on April 22, people around the world celebrate Earth day. The days Mark's the start of the environmental movement in 1970, and for the past 51 has resulted in policy change and a greater awareness of the environment. In 1969, junior senator goylord Nelson from Wisconsin announced college campuses to educate people about the dangers of air and water pollution.
The impact of the very first Earth Day was huge. It led to the creation of the environmental protection agency, which still exists today, and same of our most import environmental laws beings passed.
find the video of professor morgan making a concept map for chapter 3. what two subcategories does she break polysaccharides (a type of carbohydrate) into in her concept map?
In the video of Professor Morgan making a concept map for chapter 3, the two subcategories she break polysaccharides into are oligosaccharides and the simple sugars.
When contrasted to other, more prevalent carbohydrates, including those in the disaccharide group, oligosaccharides, or carbohydrates with between 3 and 10 single sugar residues, are not as prevalent in the diet. The oligosaccharides raffinose, stachyose, and verbascose are typical.
At every period of one's life, carbohydrates, which are commonly referred to as carbs, are essential. They are the main energy energy source for us and the main energy source for the mind. The body converts carbohydrates into glucose, a form of sugar. A healthy diet must include carbohydrates because they contain many crucial elements.
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how does the topography of fiji compare to other islands in the pacific?
Fiji is a group of volcanic islands in the South Pacific with a distinct topography. The topography of Fiji is comparable to that of other Pacific islands in that it is made up of rugged terrain, mountainous areas, and flat plains.
However, Fiji's topography differs significantly from that of other Pacific islands due to the fact that it is made up of three main islands and more than 300 smaller islands. The larger islands of Fiji, Viti Levu and Vanua Levu, are both mountainous, with Viti Levu reaching a height of over 1,300 meters at its highest point. The smaller islands are generally flat, with low-lying coral reefs and sandy beaches.
The landscape of Fiji's islands is a combination of the effects of tectonic activity and erosion. The islands were formed by volcanic activity, which created the mountainous areas. Over time, the mountains have been eroded by wind and rain, creating the valleys and plains that are found in Fiji today. The erosion has also contributed to the formation of coral reefs around the islands, which provide habitat for a diverse range of marine life.
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Tropical grassland are rich in fauna.justify
Answer:
yes
Explanation:
As distance form from the mid ocean ridge increases what happens to the age of the sea floor
Question
How are Canada and the United States similar?
Answer:
They are both in North America. They are both in the north and west hemisphere.
Explanation:
Which data are shown on topographic maps?
O population sizes of major cities
O information about elevation and slope
O relief of each area laid out in tiled squares
O variations in climate between geographic areas
Answer:
information about elevation and slope
The data shown on topographic maps are information about elevation and slope. Thus the correct option is B.
What is a Map?A map is referred to as a pictorial representation of different places used to identify the direction and reach the next location. They help the user to identify sea, rail routes, and roads to reach the destination.
There are different types of Maps available that are used for different purposes in order to determine various locations of physical structures, special information, and so on.
Topographical maps distinguish themselves from other maps by depicting accurate elevation, with curved lines aiding in the mapping of the area.
The thematic maps are created to emphasize information on particular subjects. This can included weather pattern or population density.
Therefore, option B is appropriate.
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does the bosten washington corrider have a population of about 50 people?
Answer:
yes
Explanation: just assuming lmk if you get it right
Name two ways Domestic uses can pollute the water supply
Answer: Two ways domestic uses can pollute the water supply is the city sewage and industrial waste! This can contain toxic substances and chemicals, causing problems.
Hope this helps!
which is heavier, a pound of feathers or a pound of rocks?
Answer:
Neither, they are the same weight
Explanation:
They are both a pound, so they would be the same weight.
All of the following are indicators of an advanced ancient civilization except
A. stepped pyramids or other sophisticated structures
B. organized religion
C. little trade with outsiders
D. advanced bureaucracy and written language
Please select the best answer from the choices provided.
A
ОООО
C
D
Answer: A is your awnser
Explanation:
Answer:
A is your answer i think
Explanation:
please mark me the brainiest
Describe the police in Dubai.
Answer:
The Dubai Police Force is the 17,500 strong police force for the Emirate of Dubai, in the United Arab Emirates. They come under the jurisdiction of the ruler of Dubai, and they cover an area of 4,114 square kilometres and a population of 2.8 million people.