Thế nào là Khoa học tự nhiên? Nêu vai trò của Khoa học tự nhiên trong cuộc sống?

Answer:

The settlement grew rapidly during the ninth and eight centuries BCE. At some stage after c. 750 BCE it was attacked and destroyed in a complete fire.

Answer:

In culture and lanuage

Explanation:

Answer: June 21st

Explanation: I hope this helps, have a great day :)

Answer:

option c would be the right answer tectonic plates shifts thus causing Collison of lands. plates

Answer:

Iron oxides appeared after the emergence of cyanobacteria.

Explanation:

The composition of Earth's atmosphere in the first couple of billions of years of its existence was nothing like the atmosphere of today. This had a big influence on the processes that were taking place, or rather what processes and to what extent could have happened in those conditions. One big difference between the atmosphere then and after is the levels of oxygen.

Until the appearance of cyanobacteria, the oxygen levels in Earth's atmosphere were very low, and the same goes for the oceans. With a lack of oxygen, the process of oxidation was absent as well. The cyanobacteria though managed to produce oxygen, and this was on such a high scale that they changed the composition of Earth's atmosphere and the oceans. Not just that this enabled complex lifeforms to develop, but it also enabled the process of oxidation. Iron oxides for example occurred only after cyanobacteria appeared, and this can easily be seen when dating the oldest iron oxides and compare that age with the appearance of cyanobacteria.

Stages 4 and 5 of the model are characterized by a low birth rate and a low death rate, resulting in a stable or declining population. Therefore, option A, zero population growth, is the demographic factor that characterizes stages 4 and 5 of the demographic transition model.

The demographic transition model is a theoretical model used to explain the changes in population growth rates over time. It is divided into five stages, each characterized by different demographic factors. Zero population growth refers to a state where the birth rate equals the death rate, resulting in no net increase in population size. This can be achieved through various means, including family planning programs, education, and economic development. In developed countries, zero population growth is often accompanied by an aging population and a decline in the workforce, which can pose economic challenges.

Overall, understanding the demographic factors that characterize each stage of the demographic transition model can provide valuable insights into population dynamics and inform policies aimed at promoting sustainable development.

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Answer:

gotta make sure that it doesnt explode

Explanation:

aneroid barometers, while rare, can explode

The major modification of the environment can be seen in this image is loss of animal habitat downstream

On the border of Arizona, Nevada, and California, the Hoover Dam was constructed between 1931 and 1936. The dam's primary function was to regulate water flows. Before it was built, the people of the southwestern states, whose livelihoods depended on agriculture, was concerned about recurring floods and seasonal dryness.

The Hoover Dam's third main asset, in addition to enhanced irrigation options and inundation protection, was its ability to produce energy. Electricity was produced by a number of generators powered by turbines serving the rapidly expanding communities in southern California and Nevada. But there were also environmental issues with the Hoover Dam. In particular, it altered the Colorado River's course, changing the capacity of the first floodplains as well as fish habitats, sediment formations, and water quality.

The correct question is "What major modification of the environment can be seen in this image?

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Answer: Culture is found to affect economic performance through two channels; cultural traits that stimulate individual motivation, and traits that develop social capital in the population. The analysis controls for factors commonly recognized in the economic growth literature.

As air and water vapor rise higher into the troposphere, it will cool. This occurs because there is less pressure on that air and water vapor, causing it to expand and cool. We call this process adiabatic cooling.

Adiabatic cooling is a natural process that occurs when a gas expands rapidly, causing a decrease in pressure and temperature without any heat being added or removed from the system. This process is commonly observed in the atmosphere, where air rises and expands as it moves to higher altitudes. As the air expands, it cools down, leading to the formation of clouds and precipitation. Adiabatic cooling is also used in various industrial and scientific applications, such as in the operation of refrigeration systems and the cooling of electronics.

Understanding the principles of adiabatic cooling is essential for many fields of study, including meteorology, thermodynamics, and engineering.

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The mass exodus of earth for a new home in solar system is not a practical geoengineering solution to climate change. Thus Option B is the answer.

In order to directly address climate change, a variety of large-scale interventions in the oceans, soils, and atmosphere are referred to as geoengineering, sometimes known as climate engineering. A key weapon for doing this might be the extensive modification of the climate, whether by reflecting solar energy or eliminating carbon dioxide from the atmosphere. It might have the same flexibility as a house thermostat, according to experts.

Of the two, carbon geoengineering is further advanced. Injecting sulfur particles into the stratosphere, bleaching marine clouds, and launching millions of tiny orbital mirrors or sunshades into space are a few geoengineering techniques that could improve the reflectivity of incoming solar energy.

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The tides at any one locality are the result of the interaction of the sun, moon, and earth, making option B the correct answer.

Tides are caused by the gravitational pull of the sun, moon, and earth on the oceans of the world. The gravitational forces of the sun and moon create a bulge in the earth's oceans, which causes a rise in sea level. As the earth rotates, different parts of the planet experience high tide as the bulge passes through their location. The size, shape, and depth of the ocean basin can affect the amplitude of the tides, but ultimately it is the interaction of the sun, moon, and earth that produces tidal patterns. The elliptical orbits of the moon and earth also influence the strength of the tides. The rotation of the earth is also a factor in creating tidal patterns.

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The migration patterns of early humans from Africa to North America can be traced through several stages.

It is believed that the first migration out of Africa occurred around 1.8 million years ago when early Homo erectus populations ventured into Eurasia.

Around 70,000 years ago, a significant migration event occurred known as the "Out of Africa" migration. This movement involved Homo sapiens, the modern human species, leaving Africa and spreading across the globe.

These early humans followed various routes, including coastal routes along the Indian Ocean and Arabian Sea, eventually reaching Southeast Asia and the islands of Indonesia and Melanesia.

From there, some early human populations continued their migration across the Bering land bridge, which connected Asia and North America during periods of lower sea levels due to glaciations.

This migration into North America is believed to have occurred around 15,000 to 20,000 years ago. These early humans then dispersed and populated different regions of North America over time.

The theory of early human migration, often referred to as the "Out of Africa" theory or the "Replacement" theory, posits that modern humans originated in Africa and subsequently migrated and replaced earlier human species in other regions of the world.

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Answer:

well it's connected in every way for example we can see volcanic eruption it's very dangerous even if you are far away the eruption will disrupted the ground and amke it shake a lot. we can see the Bangladesh incident

Answer:

when glacier melts it is used to run electric turbines

Answer: 1 am on Sunday

Explanation:

Every distance of 15° longitude is an hour in time. This means that places that are 15° longitude apart have a time zone difference of an hour, areas that are 30° have a time zone difference of two hours and so on.

The time difference between a location in the U.S.A at longitude 120° west and Nigeria at 15° east would be:

= (120 + 15) / 15

= 9 hours

The 15 was added because Nigeria is east of the Greenwich meridian and the U.S. is west. The lines of longitude count down from the West to the East and get to zero at the Meridian. Then start again as they go east.

Areas east are also further in time than areas west so Nigeria is ahead of the U.S.

Nigeria is therefore ahead of that area by 9 hours. They would be able to watch the show at:

= 4pm + 9 hours

= 1 am on Sunday

Answer:

9.3

Explanation:

because

Answer:

The major things affecting all natural hazards are; 1. Natural factors - things like rock type (geology) in an earthquake, the shape of a coastline in a tsunami, the height of the land hit by a tsunami can influence the effects.

Explanation:

Answer:

by people ignoring it until the last min

Explanation:

It is important to note that gerrymandering is a controversial practice that involves manipulating the boundaries of electoral districts to favor one political party over another. While it is true that Republicans have been accused of gerrymandering more often than Democrats, it is not necessarily the case that this gives Republicans a persistent advantage over Democrats in elections.

In fact, the idea that Democrats tend to live in concentrated areas is a misconception. In reality, Democratic voters are scattered across the country, and there are many areas where they outnumber Republican voters. However, due to the way that districts are often drawn, these concentrations of Democratic voters are often split up into multiple districts, diluting their overall voting power.

Furthermore, it is important to recognize that gerrymandering is not the only factor that can influence election outcomes. Other factors, such as voter turnout, campaign funding, and changing demographics, can also have a significant impact on election results.

Overall, it is important to approach the issue of gerrymandering and electoral advantages with a critical eye and to consider a range of factors that may be influencing election outcomes.

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When a seismometer detects an earthquake, the first signal to arrive is usually the pressure wave.

One of the two primary varieties of elastic body waves, known in seismology as seismic waves, is the P-wave. Also known as compressional or compression waves, mechanical longitudinal waves. Pressure waves are the first signal from an earthquake to reach any impacted place or a seismograph since they move quicker than other seismic waves.

Pressure waves are typically too subtle for people to detect, though seismographs can. However, some animals might be able to recognize P-waves before the onset of the S-waves. For any earthquake that was close enough to them to affect them, they would have less than two minutes of notice.

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Seismic activity is closely monitored as a predictor of volcanic eruptions because it can provide valuable information about the movement of magma and the potential for volcanic activity.

Volcanic eruptions are often preceded by seismic activity, which refers to the occurrence of earthquakes in the vicinity of a volcano. Monitoring seismic activity allows scientists to detect and analyze the seismic waves generated by the movement of magma and volcanic gases beneath the Earth's surface. By studying the frequency, intensity, and location of earthquakes, scientists can gain insights into the behavior and dynamics of the volcanic system.

Changes in seismic patterns, such as an increase in the number or magnitude of earthquakes, can indicate the movement and ascent of magma, suggesting an increased risk of volcanic eruption. Therefore, monitoring seismic activity provides a crucial tool for assessing volcanic hazards and issuing timely warnings to mitigate potential risks to human populations and infrastructure in volcanic regions.

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Answer:

FALSE

Explanation:

The Appalachian mountains are the main mountain range in the east part of the United States.

False, The Appalachian mountains are the main mountain range in the east.

The Appalachian Mountains are a network of mountain ranges in North America. Located partly in Canada but mostly in the United States, they form a zone of 150-500 kilometers (approximately 300 miles). Newfoundland and Labrador in Canada and central Alabama in the United States are 2,400 km (1,500 miles) apart, with foothills in northeastern Mississippi.

The Gaspé Peninsula is the northernmost part of the mainland. It is estimated that the Appalachians predate the formation of the North American continent by several thousand years.

It consists of a series of ranges that rise up to about 900 meters (3,000 feet) in height. Mount Mitchell, the highest peak in eastern North America east of the Mississippi River, has a height of 2,037 m (6,684 feet), which is the highest point east of the Mississippi River.

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Answer:

North America-located above South America and beside Europe. It is located in the northern and western hemispheres. South America-located under North America and beside Africa. It is located in the southern and western hemispheres.

The student's experiment most likely demonstrate B  electrons moving at high speed produce electromagnetic waves.

Waves that do not require a material medium for propagation are known as electromagnetic waves.The speed of light of electromagnetic waves is approximately 3 x 108 m/s.All electromagnetic waves like light waves, microwaves, X-beams, radio waves, and so forth, are cross over waves since they go opposite to the course of their engendering.The correct option is b.

Therefore, the student's experiment most likely demonstrates that electromagnetic waves are produced by fast-moving electrons. The electromagnetic wave is a sustained oscillation of electric fields and magnet fields. Its ability to travel without a material medium is one of its most important characteristics.

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Answer:

Explanation:

Volcanoes form when magma from earth's mantle makes its way to the surface where it erupts lava (which is magma exposed to air). Over time the the ash and hardned lava deposits will start forming the mountainous shape of a volcano.

Earthquakes is when two blocks of earth suddenly break along a fault and slip past one another. As the plates moves againsit one another, it causes seismic waves which shake the earth causing it to "quake".

The shorthand notes that Tahlia is taking are typically called stenographic notes.

These notes are a way of quickly capturing information using a set of symbols or abbreviations that are designed to be efficient and easy to write. Stenographic notes are often used by professionals such as court reporters, journalists, and researchers who need to take down information quickly and accurately. While shorthand notes can be helpful for capturing important details in the moment, it's important to remember that they are not a substitute for more detailed observations or analysis. Later on, Tahlia will need to take the shorthand notes she has made and use them as a basis for more in-depth observations, taking the time to expand on the shorthand and fill in any missing details.

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Answer:

The answer should be 360°