In 1978, the united states banned the use of cfcs in aerosols between 1975 and 1991, the amount of CFC in the air increased; between 1991 and 2015, it declined. CFC causes lungs and skin diseases.
CFC stands for "chloro flouro carbon," since the name implied that CFOC contains carbon, chlorine, and flourine atoms.
According to the question, CFCs are emitted from numerous cooling devices and are dangerous for both the environment and human health. As a result of the ozone layer being damaged, UV radiation will reach the ground and may result in human skin diseases or skin cancer in addition to lung diseases. Additionally, it is stated that it was prohibited worldwide in 1987, so from 1975.
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most earthquake prediction is dependent upon: question 4 options: a) short term prediction based on animal behavior b) statistical probabilities of earthquakes based on past history c) long term forecasting based upon water usage d) guessing
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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What are the total miles of streams and rivers in the Chowan River Basin?
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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choose the correct explanation of how studies of absorption lines in quasar spectra allow us to study the gas outside of galaxies.
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.)
thinking about the evidence of climate change presented in this chapter, select from the following those factors that have decreased as a result of climate change. check all that apply a humidityb sea levelc sea iced snow coveragee temperature of land glaciers
Answer:
Explanation:
Sea level, sea ice, snow coverage, and temperature of land glaciers.
a large boulder deposit of a different rock type than the local bedrock that has been carried long distances by glacial ice is called a/an:
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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imagine that it is late september, and a category 5 storm, hurricane gaston, is projected to make landfall along the path shown on the accompanying map. if the storm nears the dallas-fort worth area, what poses the biggest threat to life and property?
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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Explain how a local group of residents worked to improve the quality of the Chowan River.
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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Where are the major rivers of oceania, australia, new zealand, and antarctica located?.
Oceania, Australia, and New Zealand are not known for their major rivers, as their landscapes are mostly dry or dominated by lakes and underground water reserves. However, Antarctica has a few rivers, mostly located on the Antarctic Peninsula and in the Transantarctic Mountains. These rivers are mostly fed by glaciers and meltwater and are relatively short, with the longest being the Onyx River, which is about 32 miles long. The other major rivers in Antarctica include the Ferrar, Taylor, and Koettlitz Rivers, all located in the McMurdo Dry Valleys. Despite being few in number, these rivers are crucial for studying the effects of climate change on Antarctica's freshwater ecosystems.
Major rivers in Oceania, Australia, and New Zealand include the Murray-Darling River system, the Murrumbidgee River, and the Waikato River. In Australia, the Murray-Darling River system is the largest and spans across New South Wales, Victoria, and South Australia. The Murrumbidgee River, also in Australia, flows through New South Wales and the Australian Capital Territory. In New Zealand, the Waikato River is the longest and flows through the North Island.
As for Antarctica, there are no major rivers due to its extreme climate and the majority of the continent being covered in ice. However, meltwater streams and small rivers may temporarily form during the warmer months.
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Outwash plains are formed as a result of deposition by.
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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Describe the temperature gradient found in the troposphere.
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.
defining characteristics of a wetland involve which of the following? A. hydrology B. soil type C. species D. composition
The defining characteristics of a wetland involve hydrology, soil type, and vegetation. Hydrology refers to the presence of water, which can be either standing or flowing. Option a , b , c
The soil type in wetlands is typically composed of hydric soils, which are saturated or inundated with water for extended periods of time. Wetland vegetation is adapted to grow in wet soils, and includes species such as cattails, sedges, and various types of wetland trees. The composition of a wetland ecosystem can vary greatly depending on factors such as water depth, nutrient availability, and climate. Together, these characteristics create a unique ecosystem that supports a variety of plant and animal species.
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g what are some of the human impacts on global climate change? what are the possible consequences of global warming? discuss the projected changes and estimated probability of certain global warming effects occurring.
There are several human impacts on global climate change, including the burning of fossil fuels, deforestation, and industrial activities.
These activities release greenhouse gases, such as carbon dioxide and methane, into the atmosphere, which trap heat and cause the planet to warm. The consequences of global warming are far-reaching and include rising sea levels, more frequent and severe heatwaves, droughts, and floods, as well as the loss of biodiversity and damage to ecosystems.
Scientists project that global temperatures could rise by 1.5 to 5 degrees Celsius by the end of the century. This could lead to melting glaciers and ice caps, which could cause sea levels to rise by several feet. Furthermore, global warming could lead to changes in precipitation patterns, resulting in more frequent and intense droughts and floods. The estimated probability of these effects occurring varies, but many scientists agree that they are likely to occur if we continue to emit greenhouse gases at current rates. To avoid these consequences, we must take action to reduce greenhouse gas emissions and transition to a more sustainable way of living.
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geologic deposits composed of sand and shale particles coated with bitumen, a viscous mixture of long-chain hydrocarbons are called (2 word answer).
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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productivity in tropical oceans is: question 5 options: nutrient limited. light limited. light and nutrient limited. oxygen limited.
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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how do shields differ from stable platforms? how do shields differ from stable platforms? stable platforms consist of exposed igneous or metamorphic rock, whereas shields are covered with a veneer of sedimentary rock. shields consist of exposed igneous or metamorphic rock, whereas stable platforms are covered with a veneer of sedimentary rock. stable platforms only occur on continents, whereas shields occur both on continents and on the ocean floor. shields only occur on continents, whereas stable platforms occur both on continents and on the ocean floor. stable platforms are consistently older than local shields.
Shields and stable platforms differ in their rock composition and geographic distribution.
Shields are usually formed through tectonic activity that brings deep-seated rocks to the surface, whereas stable platforms are created through the slow accumulation of sediment over time. This explains why shields have exposed igneous or metamorphic rock, while stable platforms are covered in sedimentary rock.
Shields are large areas of exposed Precambrian rocks, primarily composed of igneous or metamorphic rocks that have experienced significant geological processes.
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explain how subsaharan africa qualifies as a shatterbelt
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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which option below does not correctly describe a type of mechanical weathering? which option below does not correctly describe a type of mechanical weathering? the expansion of igneous rock at earth's surfaces, followed by slabs eroding off the rock the expansion of water within cracks and pore spaces of a rock as it freezes into ice the expanding apart of rock around joints that contain salty water the roots of a tree wedging a rock apart by growing into the rock's joints a rock weathering more quickly on one side than another side
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:
The expansion of water within cracks and pore spaces of a rock as it freezes into ice is called frost wedging.The expanding apart of rock around joints that contain salty water is called salt wedging.The roots of a tree wedging a rock apart by growing into the rock's joints is called root wedging.A rock weathering more quickly on one side than another side is called differential weathering.Overall, mechanical weathering refers to the physical breakdown of rocks into smaller pieces without changing their chemical composition.
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the map shown above best fits which of the following map types? responses choropleth choropleth cartogram cartogram proportional symbol proportional symbol dot symbol dot symbol isoline
The map shown above best fits choropleth map types.
A statistical thematic map called a choropleth employs pseudo color, or color that corresponds to an overall summary of a geographic attribute within geographical enumeration units, such population density or per-capita income.
Choropleth maps make it simple to see how a variable changes geographically or how much variety there is inside a given area. In contrast to choropleth maps, which employ regions based on a priori geographic boundaries, heat maps and isoarithmic maps use regions that are constructed based on the pattern of the variable. Because published statistical data is typically combined into well-known geographic units like countries, states, provinces, and counties, the choropleth is probably the most popular type of thematic map.
Therefore, option A is the correct answer.
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What is cosmogenic nuclide dating used for?
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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The paris climate accord relies on strict, enforceable national limits on carbon dioxide emissions to address the environmental problem of climate change.
The Paris Climate Accord is a global agreement aimed at addressing the issue of climate change. One of the key components of this accord is the establishment of strict, enforceable national limits on carbon dioxide emissions.
The goal is to reduce the amount of greenhouse gases that are released into the atmosphere, which is the main cause of global warming and climate change. By working together to limit emissions, countries around the world can help to mitigate the negative effects of climate change, such as rising sea levels, more frequent and severe weather events, and loss of biodiversity.
The Paris Climate Accord is an international agreement that aims to address the issue of climate change by setting voluntary national targets for reducing carbon dioxide emissions. Under this agreement, countries develop their own plans to limit greenhouse gas emissions, and while these commitments are not legally enforceable, the accord does promote transparency and regular reviews of each nation's progress. The overall goal of the Paris Climate Accord is to limit global warming to well below 2°C, and ideally, to 1.5°C above pre-industrial level.
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In what part of the state of NC is the Chowan River Basin located?
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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which is not a factor that weakens a slope? group of answer choices a cover of vegetation geologic fault jointing foliation planes
A geologic fault is a fracture in the earth's crust where the two sides move past each other, creating seismic activity.
However, faults do not weaken a slope, but rather make it more susceptible to landslides and other hazards. The other options, such as a cover of vegetation, jointing, and foliation planes, can strengthen a slope by providing stability and reducing erosion.
Among the given options, a cover of vegetation is not a factor that weakens a slope. In fact, it helps to strengthen a slope by holding the soil together and preventing erosion. On the other hand, geologic faults, jointing, and foliation planes can contribute to the weakening of a slope by creating instability and potential for movement.
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In what way can Hydrilla potentially affect recreation in the Chowan River Basin?
Hydrilla, an invasive aquatic plant, can potentially affect recreation in the Chowan River Basin in several ways. First, Hydrilla can form dense mats on the water's surface, making it difficult or impossible to navigate boats, kayaks, or canoes.
The aquatic ecosystem of the Chowan River Basin can also be altered by hydrilla, which may have an effect on fish populations and their habitats.
For instance, dense Hydrilla mats may result in low oxygen levels that are harmful to fish and other aquatic life. Predators that feed on fish and other water creatures may find shelter in hydrilla.
As dense mats of the plant can produce an unappealing appearance on the water's surface, Hydrilla may also potentially reduce the aesthetic value of the Chowan River Basin for recreational purposes.
This may make tourists less likely to partake in leisure pursuits, which may have an adverse effect on the local economies that depend on tourism and leisure.
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omparing land use in urban areas and agricultural villages finds that if arable land is scarce, then the sizes of farms and houses
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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the supports some plant life but few to no trees. group of answer choices boreal climate ice cap climate humid subtropical climate tundra climate subarctic climate
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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net radiation refers to: (a) the total radiation reaching earth from the sun (b) the amount of radiation released from earth (c)the difference between absorbed and emitted radiation (d) the sum of absorbed and emitted radiation
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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(q004) which of the following statements about the hydrologic cycle is true? group of answer choices there is an exchange of water among oceans, land, and atmosphere. headward erosion causes sheetwash. surface snow and ice are not part of this cycle. water that manages to infiltrate the land is lost to the cycle.
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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the amazon river floods its banks each year. why would a brazilian farmer choose to live near a river that is guaranteed to flood? a. the river provides the only transportation available in brazil.
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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Seasons are a result of ________.
A) differences in the distance between Earth and the sun
B) differences in the amount and intensity of sunlight brought about by the tilt of Earth's axis
C) alterations in Hadley cells
D) changes in day length
E) the phases of the moon
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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The Netherlands pump water off the land and reclaim fertile land from the North Sea; these pumps are called-
Question 6 options:
Canals
Haciendas
Pampas
Polders
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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