what change in arctic seas caused the global ocean conveyor belt to stop abruptly in the past? group of answer choices decreased salinity decreased temperature increased salinity increased temperature

Answer:

Explanation:

The ban resulted in a decrease in CFC production, as evidenced by the decrease in the concentration of CFCs in the atmosphere after 1978.

Cosmogenic nuclide dating is used for determining the age of rocks and sediments on the surface of the Earth.

Cosmic rays from space constantly bombard the Earth's surface, producing new atoms known as cosmogenic nuclides. By measuring the concentration of these nuclides in rocks and sediments, scientists can determine how long they have been exposed to cosmic rays and therefore calculate their age. This technique is particularly useful for dating surfaces that have been exposed to the atmosphere for relatively short periods of time, such as glacial moraines, volcanic lava flows, and erosion surfaces. Cosmogenic nuclide dating has applications in fields such as archaeology, geomorphology, and paleoclimatology, and has greatly improved our understanding of Earth's history and the processes that have shaped its surface.

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According to the 2010 census, the population of the Chowan River Basin is approximately 298,000 people. The Chowan River Basin is located in North Carolina and encompasses an area of approximately 3,400 square miles. The basin is home to a diverse range of communities, including urban centers, small towns, and rural areas.

The population of the Chowan River Basin has been steadily increasing over the years, with significant growth in the urban areas of the basin. The majority of the population is concentrated in the cities of Elizabeth City and Roanoke Rapids, with smaller populations in the surrounding towns and rural areas.

Overall, the population of the Chowan River Basin is relatively small compared to other regions in the United States. However, it is an important area for both environmental and economic reasons, as the basin is home to a diverse range of wildlife and natural resources, as well as a thriving agricultural industry.

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Earthquake prediction is most dependent upon is b) statistical probabilities of earthquakes based on past history.

This involves analyzing historical data on seismic activity in a particular region and using statistical models to estimate the likelihood of future earthquakes. While there have been some attempts to use animal behavior or changes in water usage as potential indicators of earthquakes, these methods are not as reliable or widely accepted as statistical forecasting. The limitations of earthquake prediction, as even the most sophisticated statistical models cannot accurately predict the timing, location, or magnitude of individual earthquakes with complete certainty.

Earthquake prediction primarily relies on analyzing past seismic activity, patterns, and historical data to estimate the likelihood of future events. While other methods like animal behavior and long-term forecasting may provide some insight, they are not as reliable as statistical analysis. Guessing is not scientific and should not be considered in earthquake prediction.

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Productivity in tropical oceans is often limited by a combination of both light and nutrient availability.

While these areas receive ample sunlight, they are often lacking in essential nutrients such as nitrogen and phosphorus. This can lead to a reduction in the growth and reproduction rates of marine organisms, ultimately limiting overall productivity. However, it's important to note that in certain areas of the tropical oceans, oxygen levels can also be a limiting factor for productivity, particularly in deeper waters or areas where there is high organic matter decomposition. While light and nutrient availability are the primary limiting factors for productivity in tropical oceans, oxygen levels can also play a role in certain situations.

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To improve the quality of the river, the Chowan Basin Task Force worked with government agencies, such as the North Carolina Division of Water Quality, to identify sources of pollution in the river and develop strategies to reduce them.

The development of the Chowan Basin Water Quality Plan in 1997, which offered a path for reducing pollution in the river, was one of the Task Force's key accomplishments. To improve the water quality of the Chowan River, the plan listed specific activities to be implemented, such as improving agricultural practises, updating wastewater treatment plants, and minimising stormwater runoff.

The Chowan River's water quality has improved in recent years because to the efforts of the Chowan Basin Task Force and other organisations. While challenges remain, the work of these committed individuals and groups demonstrates how local communities can work together to protect and restore our natural resources.

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The hydrologic cycle, also known as the water cycle, is the process by which water circulates through the Earth's atmosphere, oceans, and land.

Water evaporates from the surface of oceans, lakes, and rivers, and from the ground, into the atmosphere. The water vapor then condenses into clouds and falls back to the Earth's surface as precipitation, either in the form of rain or snow.

Groundwater is an important component of the hydrologic cycle, as it can take years or even centuries to move through the Earth's aquifers before it returns to the surface as springs or through human-made wells. The movement of groundwater is influenced by the permeability of the rocks and soils it passes through, and by the topography of the land.

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In a tundra climate, the environment supports some plant life, such as mosses and lichens, but few to no trees due to the harsh, cold conditions and short growing season.

This climate supports some plant life but few to no trees due to the extreme cold temperatures and short growing seasons. The tundra climate is characterized by low temperatures, high winds, and low precipitation, which results in a short growing season and limited plant growth. The plants that do grow in this climate include grasses, mosses, and shrubs, which are adapted to the harsh conditions. However, trees cannot survive in the tundra climate due to the frozen ground and lack of nutrients in the soil.

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The Mars Pathfinder mission found evidence of water in Ares Valles in the form of sedimentary rocks that show a layered structure potentially caused by liquid water. Additionally, there were also remnants of H2O droplets on the regolith, further supporting the presence of water on Mars. However, there is no evidence of organic molecules that can only be formed in the presence of water or igneous rocks produced by volcanic action transported possibly by water to Ares Valles.

The Mars Pathfinder found evidence of water in Ares Vallis mainly through the presence of sedimentary rocks that show a layered structure, potentially caused by liquid water. Additionally, igneous rocks produced by volcanic action, which may have been transported to Ares Vallis by water, were also discovered. These two findings support the idea that liquid water once existed on Mars.

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A Brazilian farmer may choose to live near the Amazon River, despite its annual flooding, because the floods bring nutrient-rich silt to the surrounding land, making it highly fertile for agriculture. The river provides an important transportation route for goods and people, which can be beneficial for trade and connectivity with other communities.

While it is true that the Amazon River provides an important means of transportation in Brazil, there are several other factors that may influence a farmer's decision to live near the river despite the annual floods. For one, the soil in floodplains tends to be highly fertile and rich in nutrients, making it ideal for agriculture. Additionally, the river provides a consistent source of water for irrigation and other agricultural needs. Living near the river may also provide access to fishing and other aquatic resources, which can supplement a farmer's income.

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A large boulder deposit of a different rock type than the local bedrock that has been carried long distances by glacial ice is called an erratic.

Erratics are a common feature of glacial landscapes, and they can vary greatly in size and composition. They are often used by geologists to help map the extent and direction of ancient glaciers, as they can provide clues about the direction and speed of ice flow. Erratics can also be used to study the geological history of an area, as they can provide information about the types of rocks and minerals that were present in different regions at different times. Overall, erratics are an important part of understanding the complex and dynamic nature of glacial landscapes.

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The mantle of the earth is a layer that lies between the crust and the core. It is primarily composed of hot, soft rock that is in a semi-molten state. This layer is responsible for many of the geological processes that shape the surface of the earth, such as volcanic eruptions and the movement of tectonic plates. The mantle is not like the surface of the earth, as it is located beneath the crust and is not exposed to the atmosphere or other external factors. It also does not resemble a metallic core, as the core is composed of iron and nickel and is much denser than the mantle.

While the mantle is primarily composed of rock, it does contain small amounts of gases such as helium and oxygen, as well as minerals like magnesium and silicon. However, these elements are not the primary components of the mantle and do not define its overall composition.

In summary, the mantle of the earth can be described as a layer of hot, semi-molten rock that is responsible for many of the geological processes that shape the surface of the earth. While it does contain some gases and minerals, these elements do not define its overall composition. The mantle of the Earth can be described as containing hot, soft rock, primarily composed of elements such as magnesium, silicon, oxygen, and other trace elements. It does not resemble the Earth's surface or its metallic core, and it is not primarily gaseous or composed of helium.

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The answer to the question is B) differences in the amount and intensity of sunlight brought about by the tilt of Earth's axis. As the Earth orbits the sun, its axis is tilted at an angle of approximately 23.5 degrees.

This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year, leading to changes in temperature and weather patterns that define the seasons.

While factors such as the distance between Earth and the sun, Hadley cells, day length, and moon phases may have some impact on certain aspects of Earth's climate, the primary cause of seasons is the tilt of Earth's axis. This tilt allows for variations in sunlight exposure, creating different weather patterns and temperatures across the globe throughout the year.

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Mountain and basin formation can occur as a result of ocean-continent convergence, which is the collision of an oceanic plate with a continental plate.

One of the main processes associated with mountain and basin formation during ocean-continent convergence is the creation of a subduction zone. As the oceanic plate moves beneath the continental plate, it can create a trench in the ocean floor. This trench can act as a focus for seismic activity and can lead to the creation of volcanoes on the continental plate.

Another process associated with mountain and basin formation during ocean-continent convergence is the formation of fold and thrust belts.

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Comparing land use in urban areas and agricultural villages is difficult as both are different types of land with different uses. But if arable land is scarce, then the size of farms and houses can be small.

Farmers in locations with a shortage of arable land could have to maximise the space they have at their disposal, which might result in smaller farms. As there might not be enough land available for larger residences or structures, this could also imply that houses are smaller. Families may occasionally reside in communal or multigenerational homes to make the most of their limited resources.

In urban areas, the land varies depending on several factors like the density of the population, various economic activities etc. People need more residential space will be it high-rise society or single-family space because of the high population. Various commercial and institutional activities also require a huge piece of land.

As a result, compared to agricultural communities, the size of individual housing units and the quantity of land set up for farming would be substantially lower.

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According to the U.S. Fish and Wildlife Service, five mussel species found in the Chowan River Basin are currently listed as threatened under the Endangered Species Act. These species are The dwarf wedge mussel, The Tar River spinymussel, The yellow lance mussel, The Atlantic pigtoe and The Roanoke spinymussel.

The following species:

The dwarf wedge mussel (Alasmidonta heterodon) can be found in the Chowan River Basin and other chilly, clean streams in the eastern United States.

The Tar River spinymussel (Elliptio steinstansana) is a type of mussel that may be found in the Chowan River Basin's Tar River.

The Chowan River Basin is one of the many rivers and streams in the eastern United States that are home to the yellow lance mussel (Elliptio lanceolata).

The Chowan River Basin is home to the Atlantic pigtoe (Fusconaia masoni), a mussel that may be found in numerous rivers and streams around the eastern United States.

The Roanoke spinymussel (Pleurobema pyriforme) is a type of mussel that can be found in the Chowan River Basin in the Roanoke River.

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The events shown on the map resulted in the expansion of the Roman Empire.

The map shows the territorial expansion of the Roman Empire from 264 BC to 14 AD. The Roman Empire was able to conquer and incorporate new territories into its empire through military conquest and colonization. The conquests were driven by a desire for power, wealth, and territorial control. The Roman army was highly organized, well-trained, and well-equipped, which allowed them to defeat their opponents on the battlefield.

The Roman Empire's territorial expansion had several consequences, including the spread of Roman culture, language, and architecture. The empire also created a vast trading network, which allowed for the exchange of goods and ideas across different regions. Additionally, the empire's legal and political systems became models for future civilizations.

Overall, the result of the events shown on the map was the creation of one of the most powerful and influential empires in world history.

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The Chowan River Basin, located in North Carolina, is home to numerous streams and rivers that provide critical ecological and economic benefits to the region. While the exact total miles of streams and rivers in the Chowan River Basin can vary depending on the source, the US Environmental Protection Agency estimates that the basin encompasses approximately 3,800 miles of streams and rivers.

These waterways support a diverse array of plant and animal species, and they also serve as important sources of drinking water, irrigation, and recreation for communities throughout the basin. However, like many other water systems across the country, the Chowan River Basin faces a range of threats, including pollution, climate change, and habitat loss.

Efforts to protect and restore the streams and rivers of the Chowan River Basin are underway, with many organizations and agencies working to implement strategies such as conservation easements, riparian buffer restoration, and water quality monitoring. By working together to safeguard these critical resources, we can help ensure that the Chowan River Basin remains a healthy and vibrant ecosystem for generations to come.

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Answer:

Explanation:

Sea level, sea ice, snow coverage, and temperature of land glaciers.

Oil sands are geologic deposits that contain a mixture of sand, clay, water, and a dense and extremely viscous form of petroleum called bitumen.

The bitumen coats the sand and shale particles, making it difficult to extract and process. Oil sands are primarily found in Canada and Venezuela, and are a controversial source of oil due to the environmental impact of extraction and production.

Oil sands are a type of unconventional petroleum deposit found in specific regions worldwide, mainly in Canada, Venezuela, and Russia. They contain a mixture of sand, clay, water, and bitumen, which can be extracted and processed to produce crude oil.

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The biggest threat to life and property if Hurricane Gaston nears the Dallas-Fort Worth area would be the strong winds and storm surge.

Category 5 storms are the most severe and destructive hurricanes, with sustained winds over 156 mph and storm surges over 18 feet. If Hurricane Gaston were to make landfall near the Dallas-Fort Worth area, the strong winds would cause widespread damage to buildings, homes, and infrastructure. Trees and power lines could be knocked down, causing power outages and making it difficult for emergency responders to reach those in need.

In addition to the strong winds, the storm surge could also pose a significant threat to life and property. A storm surge is a rise in sea level caused by the storm's winds and low pressure, which can cause coastal flooding and damage. The Dallas-Fort Worth area is not directly on the coast, but the surge could still impact nearby bodies of water, such as Lake Lewisville or Lake Grapevine, causing flooding and damage to homes and businesses along the shore.Overall, it is crucial for residents in the Dallas-Fort Worth area to closely monitor the path and strength of Hurricane Gaston and heed any evacuation orders or safety precautions issued by local officials.

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The Chowan River Basin is located in the northeastern part of the state of North Carolina. It is a vital ecosystem that spans approximately 5,300 square miles, covering both North Carolina and Virginia. The Chowan River itself is a tributary of the Albemarle Sound and provides essential resources to the surrounding communities and natural habitats.

The basin includes various counties in North Carolina, such as Hertford, Bertie, Northampton, Chowan, and Gates, as well as parts of Virginia. It consists of several rivers, streams, and tributaries that all eventually flow into the Albemarle Sound. The primary water sources in the basin include the Meherrin, Nottoway, Blackwater, and Chowan Rivers.

The Chowan River Basin is home to a diverse range of plant and animal species, and it plays a crucial role in supporting agriculture, forestry, fishing, and recreational activities in the region. The basin's wetlands, forests, and waterways serve as natural filters, helping to maintain water quality and protect the environment.

In summary, the Chowan River Basin is located in the northeastern part of North Carolina, encompassing several counties and extending into parts of Virginia. It is a critical ecosystem that supports a variety of species and provides essential resources to the region.

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The orbits of gas clouds and accretion disks in galaxies like as M87 and NGC 4258 provide evidence. Their orbital speeds indicate that they are circling large objects.

In these circumstances, the core objects must likewise be relatively tiny in size for their masses.

Apart from a supermassive black hole, we know of no objects that can be both massive and small.. Their orbital speeds indicate that they are circling large objects, which must be relatively tiny in size for their masses. Apart from supermassive black holes, we know of no objects that can be both massive and small.

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Full Question

Choose the correct statement explaining the evidence that supermassive black holes really exist.

Drag the items on the left to the appropriate blanks on the right to complete the sentences. (Not all terms will be used.)

Answer:

Explanation

Net radiation refers to the difference between the incoming solar radiation and the outgoing radiation emitted by the Earth's surface and atmosphere. Option C .

It is the balance of the absorbed and emitted radiation by the Earth. Solar radiation is the energy that the Earth receives from the sun, while the Earth emits radiation back to space as a result of its temperature. The absorbed radiation is converted to heat energy and re-emitted as longwave radiation. The net radiation value is important for understanding the Earth's energy balance and how much energy is being stored in the atmosphere, land, and ocean. It helps us understand the processes that drive Earth's climate and weather patterns, and provides insights into how the planet's temperature is changing over time.

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The Netherlands pump water off the land and reclaim fertile land from the North Sea; these pumps are called Polders.

The correct option is D.

Polders are areas of low-lying land in the Netherlands and other coastal countries that have been reclaimed from the sea or river delta areas. The Netherlands has a long history of using polders to create new land from the North Sea, which has helped to increase the country's agricultural output and reduce flooding.

Pumping systems are used in these polders to remove water from the land, which can be below sea level, and to prevent flooding. The water is pumped into canals or rivers and eventually flows back into the sea. This process of pumping water off the land and reclaiming fertile land from the sea has been an important part of the Dutch landscape and culture for centuries.

The reclamation of land from the sea has also resulted in the creation of unique natural habitats, such as wetlands and marshes, which now support a diverse range of flora and fauna. Additionally, polders have become popular tourist destinations for visitors who are interested in learning more about Dutch history and culture. The correct option is D.

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Answer:

temperature decreases with altitude

Explanation:

As the density of the gases in this layer decrease with height, the air becomes thinner. Therefore, the temperature in the troposphere also decreases with height in response. As one climbs higher, the temperature drops from an average around 62°F (17°C) to -60°F (-51°C) at the tropopause.

The option that does not correctly describe a type of mechanical weathering is "the expansion of igneous rock at Earth's surfaces, followed by slabs eroding off the rock."

This is not a type of mechanical weathering, but rather a type of chemical weathering known as exfoliation. Exfoliation occurs when large slabs of rock break off from a larger rock mass due to the expansion and contraction of the rock caused by temperature changes.

The other options correctly describe types of mechanical weathering:

Overall, mechanical weathering refers to the physical breakdown of rocks into smaller pieces without changing their chemical composition.

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Sub-Saharan Africa is considered a shatterbelt due to its diverse cultural and linguistic backgrounds, which have led to political instability and conflict. The region is home to over 2,000 distinct ethnic groups, each with their own languages, customs, and traditions.

These groups have often found themselves at odds with each other, and this has resulted in numerous civil wars, ethnic conflicts, and political turmoil. Moreover, the region's geography and history also contribute to its status as a shatterbelt. Sub-Saharan Africa is a vast and diverse region, comprising deserts, savannahs, rainforests, and mountain ranges, among others. This has made it difficult to establish centralized control and led to the fragmentation of power, as different groups have carved out their own territories.

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Outwash plains are formed as a result of deposition by meltwater streams from glaciers. An outwash plain is a flat or gently sloping area composed of sand, gravel, and other sediments that have been deposited by glacial meltwater.

When glaciers melt, they release large amounts of water that flow downhill as streams. These streams carry sediments, rocks, and other debris that were previously frozen in the glacier. As the water flows downhill, it deposits these materials on the surrounding land, forming outwash plains.
As glaciers retreat, the meltwater carries sediments and debris from the glacier's edge and deposits them in an outwash plain, creating a sorted and stratified accumulation of materials.

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