The correct answer is A) tectonic cycle. Heat energy and new materials are brought to the surface from the interior of the Earth through the process of plate tectonics. This is the movement of large sections of the Earth's crust and upper mantle, which can create new landforms such as mountains and volcanoes.
Along with these landforms, new minerals and rocks are also brought to the surface through the tectonic cycle. The rock cycle, on the other hand, describes the process of how rocks are formed, broken down, and transformed over time, while the hydrologic cycle explains how water moves through the Earth's atmosphere, oceans, and land. The mineral cycle refers to the natural processes that allow minerals to form and be redistributed within the Earth's crust.
It is important to understand that the tectonic cycle plays a crucial role in shaping the Earth's surface and providing resources for human use.
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.At the last quarter moon phase, how much of the moon's surface is receiving sunlight?
A) 40 %
B) 50%
C) 60%
D) 70%
At the last quarter moon phase, 50% of the moon's surface is receiving sunlight.
This is because during this phase, the moon is positioned at a 90-degree angle from the sun and the Earth. Half of the moon is illuminated by the sun while the other half is in shadow. The illuminated portion is what we see from Earth, and it appears as a half-circle or semi-circle. As the moon moves towards a new moon phase, less and less of the moon's surface is illuminated by sunlight until it is completely in shadow during a total solar eclipse. The moon's phases are a result of the moon's position relative to the sun and Earth, and they provide a beautiful display of the interplay between these celestial bodies.
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Which of the examples below shows how carbon moves from the geosphere directly to the atmosphere?
a. During photosynthesis, plants absorb carbon dioxide.
b Carbon dioxide combines with water vapor to make carbonic acid, which rains and weathers rocks on Earthâs crust.
c. When land animals die, they release carbon dioxide into the atmosphere.
d. When certain small marine organisms die, their calcium carbonate skeletons fall to the ocean floor and eventually become sedimentary rock.
e. The burning of fossil fuels (e.g., coal) releases carbon dioxide directly into the atmosphere.
The correct option is (e) The burning of fossil fuels (e.g., coal) releases carbon dioxide directly into the atmosphere.
Fossil fuels are formed from the remains of dead organisms (e.g., plants) that were buried under sediment millions of years ago. When these fossil fuels are burned, the carbon that was stored in them is released as carbon dioxide gas into the atmosphere. This is a direct transfer of carbon from the geosphere (fossil fuels) to the atmosphere. Other options describe carbon cycles that involve intermediate steps or reservoirs, such as photosynthesis in plants (biosphere), weathering of rocks (geosphere), and formation of sedimentary rock (geosphere).
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why does land heat up to higher temperatures than an adjacent area of water?
Land heats up to higher temperatures than an adjacent area of water due to the difference in their physical properties.
Water has a higher specific heat capacity than land, which means that it requires more energy to raise the temperature of water compared to land. As a result, when sunlight hits the Earth's surface, the land absorbs more heat energy than the adjacent body of water, causing the land to heat up faster and to higher temperatures. Additionally, water is a better conductor of heat than land, which means that it can distribute heat more evenly across its surface. This property helps to regulate the temperature of the water, preventing it from heating up too quickly or too much. In contrast, land can retain heat for longer periods, resulting in higher temperatures in the surrounding areas. Therefore, due to these physical properties, land tends to heat up to higher temperatures than water.
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Is it possible for the vertex of an isosceles triangle to be a right angle? Explain why or why not and state the angle measures of the triangle, if possibe
Answer: No
Explanation:
an isosceles triangle does not always have a right angle. The only properties that a triangle must satisfy to be an isosceles triangle is that it has two sides of equal length, and it has two angles of equal measure.
a tangible geographic area in which no state exercises complete political control is called a(n)
A tangible geographic area in which no state exercises complete political control is called a "de facto state" or "stateless territory."
A de facto state or stateless territory refers to a geographic area where no single state has full political control or recognition. These areas may have some level of governance and administration, but they are not under the complete sovereignty of any particular state.
De facto states often emerge as a result of political conflicts, historical disputes, or complex geopolitical dynamics. Examples of de facto states include regions like Abkhazia, Northern Cyprus, and Somaliland, which have their own governments and institutions but lack widespread international recognition.
These territories operate independently to varying degrees, and their status remains contested. De facto states pose challenges to traditional notions of statehood and sovereignty, as they exist within the geopolitical landscape but lack full recognition and control from the international community.
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in terrain with steep hill slopes, which crop and cultivation technique will minimize soil erosion?
In terrain with steep hill slopes, contour farming and terracing are cultivation techniques that can minimize soil erosion.
Contour farming involves planting crops along the contour lines of the slope rather than planting in straight rows up and down the slope. This technique helps to slow down the flow of water, reducing erosion by allowing water to infiltrate the soil and reducing the speed of runoff.
Contour farming also helps to create small terraces or ridges that further prevent erosion by capturing and holding the water, allowing it to soak into the soil.
Terracing is another effective technique for minimizing soil erosion on steep slopes. It involves creating flat or gently sloping platforms across the slope, often supported by retaining walls or embankments. These terraces act as barriers to control the flow of water down the slope, reducing the velocity of runoff and preventing erosion. The flat surfaces also provide areas for water to infiltrate and be absorbed by the soil, reducing the amount of runoff.
By implementing contour farming and terracing techniques, farmers can effectively minimize soil erosion on steep hill slopes, protecting the soil and promoting sustainable agriculture practices.
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the sierra nevada batholith formed during subduction of the _____ plate beneath north america.
The Sierra Nevada batholith formed during the subduction of the Farallon plate beneath North America. This process occurred during the Mesozoic era, specifically during the Late Jurassic to Early Cretaceous period, approximately 150 to 80 million years ago.
As the Farallon plate subducted beneath North America, it generated heat and pressure that led to the melting of the mantle beneath the continental crust. This molten rock, or magma, rose to the surface and cooled, forming the Sierra Nevada batholith. The batholith is a massive, dome-shaped rock formation that extends for approximately 400 miles through eastern California.
It is composed of granitic rocks and is thought to be one of the largest batholiths in the world. The Sierra Nevada batholith played a significant role in shaping the landscape of California, including the formation of the Yosemite Valley and the Sierra Nevada mountain range.
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More than half of the population is engaged in agriculture in all of the following regions except
A. China
B. Western Europe
C. India
D. Africa
Please select the best answer from the choices provided.
OA
OB
Answer:
B. Western Europe
Explanation:
More than half of the population is engaged in agriculture in all of the following regions except Western Europe.
by examining the widths of the spectral lines we can find information about a star's _____
By examining the widths of the spectral lines, astronomers can gain valuable information about a star's properties, such as its temperature, chemical composition, and motion.
The spectral lines represent the unique fingerprints of light emitted by the star, which has passed through its atmosphere and been absorbed by the elements present there. By analyzing these lines, astronomers can determine which elements are present in the star's atmosphere, as well as their relative abundances. They can also measure the Doppler shift of the lines, which indicates whether the star is moving towards or away from us, and at what velocity. This information can be used to calculate the star's distance, age, and other properties, such as whether it has a companion or is undergoing mass loss. Overall, studying the spectral lines is a powerful tool for understanding the physical and chemical properties of stars, and for advancing our understanding of the universe.
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Which of the following are considered triggers for mass-wasting events? Choose all that apply.
oversteepening of the slope
desiccation (drying) of the material
oversaturation of the material
addition of vegetation to the slope
earthquakes
The triggers for mass-wasting events include oversteepening of the slope, desiccation (drying) of the material, oversaturation of the material, and earthquakes.
Mass-wasting events, also known as mass movements or landslides, can be triggered by various factors. One common trigger is the oversteepening of the slope, which occurs when the angle of the slope becomes too steep for the material to maintain stability.
This can happen due to natural processes or human activities such as excavation or construction. Desiccation, or the drying of the material, can lead to the loss of cohesion and strength, making the slope susceptible to failure. Conversely, oversaturation of the material, typically caused by heavy rainfall or melting snow, increases the pore pressure and reduces the frictional resistance, making the slope unstable.
Earthquakes can also trigger mass-wasting events by shaking the ground and destabilizing slopes. The addition of vegetation to the slope can have a stabilizing effect by enhancing slope cohesion and reducing erosion, therefore, it is not considered a trigger for mass-wasting events.
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which layer of earth is the thickest (as opposed to the densest)?
Answer: Mantle is the thickest at about 2900 km
Explanation:
what are the different types of deep foundations? what are the typical ranges of capacity for these deep foundations? for sand deposit which foundation will you recommend? for clay soils which foundation will you recommend
Different types of deep foundations include driven piles, drilled shafts (also known as bored piles), and caissons.
The capacity of deep foundations can vary widely depending on factors such as soil conditions and structural requirements. However, typical ranges of capacity for deep foundations can range from a few hundred kilonewtons (kN) to several thousand kN.
For sand deposits, a driven pile foundation is often recommended. Driven piles are effective in sandy soils as they can penetrate through loose layers and reach more stable soil layers, providing a reliable load-bearing capacity.
For clay soils, drilled shafts or bored piles are commonly recommended. These deep foundations can withstand the cohesive properties of clay and are effective in transferring loads through the clay layer to more competent strata, ensuring stability and structural support. The diameter and length of the drilled shafts or bored piles can be customized based on the specific soil conditions and required load-bearing capacity.
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which definition best describes global warming?a long-term change in the earth's climatea long-term increase in the earth's average temperaturea long-term change in the climate of a region or a citysolar heat that is radiated out into space
Answer: B. a long-term increase in the Earth's average temperature
Explanation: Global warming is basically a long-term increase in the Earth's average temperature.
which of the following statements is not true about sub-saharan african cities?
Here are a few statements that are commonly believed to be true about Sub-Saharan African cities:
1. Sub-Saharan African cities have experienced rapid urbanization in recent years, with many people moving from rural areas to urban centers in search of better economic opportunities.
2. Many of these cities are characterized by informal settlements, inadequate infrastructure, and limited access to basic services like clean water, sanitation, and healthcare.
3. Crime and violence are major concerns in many Sub-Saharan African cities, with high rates of theft, robbery, and homicide.
4. Despite these challenges, many cities in the region are also centers of cultural and artistic expression, with vibrant music, art, and fashion scenes.
"Sub-Saharan African cities are all the same" is not true. While there are certainly some commonalities among cities in the region, there is also a great deal of diversity in terms of culture, geography, and development. Some cities, like Lagos and Nairobi, are major economic hubs with bustling business districts and thriving tech industries.
Others, like Dakar and Accra, are known for their vibrant arts and culture scenes. Still others, like Kigali and Addis Ababa, are actively working to improve infrastructure and urban planning in order to make their cities more livable and sustainable. So while there are certainly challenges facing many Sub-Saharan African cities, it's important to recognize the diversity and complexity of the region as well.
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Description of Durban in terms of it's exact position (degrees, minutes and seconds
typical weather within the eye of a hurricane consists of question 35 options: large hail. strong winds but clear skies. fair skies and light winds. thunder and lightning. tornadoes.
Fair skies and light winds are typically observed in the eye of a hurricane.
The eye is a relatively calm area at the center of the storm, where sinking air creates clear skies and little to no precipitation. The winds within the eye are also relatively light, although they can change direction suddenly as the eyewall, the area immediately surrounding the eye, rotates around the center. It is important to note that the calm conditions within the eye can be deceptive, as the most intense winds and rainfall occur in the eyewall.
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outline the negative impact of droughts on the economy of south africa
The rise in food costs in South Africa has been the most notable effect of the drought.
The province's severe drought resulted in less grazing, water for animals, and irrigation, which had a significant influence on the agricultural industry. Drought is a natural occurrence that cannot be avoided but can be lessened. Food shortages and higher food prices, which harm both farmers and consumers, can result from decreased crop yields and livestock productivity. Unemployment: In South Africa, the agricultural industry employs a sizable number of people. Farmworkers and allied businesses may lose their jobs due to drought.
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The wind belt observed on the poleward side of the polar front is called the:
a. polar easterlies
b. prevailing westerlies
c. northeast trades
d. doldrums
The wind belt observed on the poleward side of the polar front is called the prevailing westerlies.
These winds blow from west to east and are characterized by their strength and consistency. They are caused by the rotation of the earth, the Coriolis effect, and the temperature difference between the poles and the equator. The prevailing westerlies are important for the global circulation of the atmosphere and are a key component of the Earth's climate system. They affect weather patterns, ocean currents, and the distribution of heat around the globe. it is worth noting that the prevailing westerlies play a crucial role in transporting pollutants, including greenhouse gases, across the planet, and their changes can lead to significant impacts on climate and weather patterns.
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what is the typical age for a globular cluster associated with our milky way?
Globular clusters are ancient clusters of stars that orbit the Milky Way. These clusters can contain anywhere from a few thousand to millions of stars, all of which formed at roughly the same time.
The typical age for a globular cluster associated with the Milky Way is around 12-13 billion years. This age is determined through observations of the stars within the cluster, as well as their chemical compositions.
Globular clusters are some of the oldest structures in the Milky Way, and studying them can provide valuable insights into the early formation and evolution of our galaxy. As astronomers continue to study these clusters, they hope to learn more about the Milky Way's past and its ultimate fate. In summary, the typical age of a globular cluster associated with our Milky Way is around 12-13 billion years, making them some of the oldest objects in the galaxy.
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which four states account for 91% of all u.s. earthquakes of magnitude 3.5 and above?
California, Alaska, Oklahoma, and Nevada account for 91% of all earthquakes of magnitude 3.5 and above in the United States.
The United States experiences thousands of earthquakes every year, but the vast majority of these are relatively small and go unnoticed by most people. However, earthquakes of magnitude 3.5 and above are typically felt by people and can cause minor damage. Four states - California, Alaska, Oklahoma, and Nevada - account for the majority of these earthquakes, with 91% of all such earthquakes occurring in these states.
California is by far the most seismically active state in the U.S., accounting for over two-thirds of all earthquakes of magnitude 3.5 and above. This is due to the state's location on the Pacific Plate boundary, where the plate is sliding past the North American Plate, causing frequent earthquakes. Alaska is another highly seismically active state, due to its location on the boundary between the Pacific and North American Plates. Oklahoma has experienced a surge in seismic activity in recent years, largely due to the injection of wastewater from oil and gas drilling activities. Finally, Nevada experiences frequent earthquakes due to its location near the boundary between the Pacific and North American Plates.
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what is the most important geologic agent in eroding, transporting, and depositing sediment?
The most important geologic agent in eroding, transporting, and depositing sediment is water.
Water is a powerful geologic agent that plays a significant role in shaping the Earth's surface through erosion, transportation, and deposition of sediment. Water, in the form of rain, rivers, streams, and ocean waves, exerts a tremendous force on the landscape, constantly reshaping it over time.
Erosion occurs as water wears away rocks and soil, carrying away particles of sediment. Rivers and streams carve through valleys and canyons, while ocean waves pound against coastlines, eroding cliffs and beaches. The force of water, combined with the abrasive action of sediment particles it carries, helps to break down rocks and transport the resulting sediments downstream or along the coast.
Transportation of sediment occurs as water carries the eroded particles downstream. Rivers and streams transport sediments in their flowing water, while ocean currents move sediments along coastlines. The speed and volume of water determine how far and how quickly sediments are transported.
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the itcz or intertropical convergence zone is the ____ . multiple choice question. transition area between different a-type tropical climates boundary between tropical and subtropical climates on a continent area near the equator where trade winds meet
The ITCZ or Intertropical Convergence Zone is an area near the equator where the trade winds from the northern and southern hemispheres meet. This convergence zone is characterized by a band of thunderstorms and heavy rainfall, which moves with the seasonal variation in the sun's position.
The ITCZ or Intertropical Convergence Zone is an area near the equator where the trade winds from the northern and southern hemispheres meet. This convergence zone is characterized by a band of thunderstorms and heavy rainfall, which moves with the seasonal variation in the sun's position. The ITCZ is the boundary between different tropical climates and marks the transition from one type of tropical climate to another. It is also known as the equatorial trough or thermal equator. In summary, the correct answer to the multiple choice question is that the ITCZ is an area near the equator where trade winds meet.
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the trade winds of the two hemispheres converge at the question 6 options: subpolar lows. itcz. polar highs. subtropical highs. none of these is correct.
The trade winds of the two hemispheres do not converge at subpolar lows, polar highs, or the ITCZ (Intertropical Convergence Zone). Instead, they converge at subtropical highs. Subtropical highs are areas of high atmospheric pressure located roughly between 30 and 35 degrees north and south of the equator.
These areas are characterized by descending air that creates stable, dry conditions and clear skies. The trade winds from the northern and southern hemispheres converge at the subtropical highs, resulting in a zone of light and variable winds known as the doldrums.
The convergence of the trade winds at subtropical highs has important effects on global climate patterns and is an important factor in the formation of deserts in regions such as the Sahara and the Australian outback. In summary, the correct answer to the question is subtropical highs.
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What is the difference between cultural assimilation and the social structural model?
While cultural assimilation involves the adoption of a dominant culture by a minority group, the social structural model focuses on the influence of broader societal structures on individuals and groups.
Cultural assimilation refers to the process of adopting the cultural norms, values, and practices of the dominant group in society. It involves individuals or groups of different cultural backgrounds merging their cultural identities into the dominant group, often resulting in a loss of their original culture. The process of assimilation can happen voluntarily or forcibly and can take place in various settings, such as in schools, workplaces, or within a community.
On the other hand, the social structural model focuses on the impact of social structures on individuals and groups, such as the influence of economic systems, political institutions, and societal norms. This model emphasizes that social structures shape individuals' experiences and opportunities, and that change in these structures is necessary for social transformation.
These two concepts are related but distinct and provide different lenses through which to view social and cultural change.
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Sites identifies a place by its:
A. Location relative to other objects in places.
B. Mathematica location on earth surface.
C. Nominal location.
D. Unique, internal physical and cultural characteristics.
E. Primary dimensions.
The correct option is C. Sites are distinctive locations that can be recognized by a combination of their unique characteristics, nominal labels, and physical and geographical location relative to other objects and places.
Sites refer to specific locations on the Earth's surface that have unique, internal physical and cultural characteristics. They are identified by their nominal location, meaning the name or label given to them, as well as their location relative to other objects and places. Sites can be recognized based on their primary dimensions, which include their physical size, shape, and orientation. Additionally, sites may also be identified by their mathematical location on the Earth's surface, which can be determined using longitude and latitude coordinates. In summary, sites are distinctive locations that can be recognized by a combination of their unique characteristics, nominal labels, and physical and geographical location relative to other objects and places.
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A site refers to a specific geographical location distinguished by its unique, internal physical and cultural traits. Its characteristics include both natural and human elements that shape the unique identity of the place.
Explanation:A site typically refers to a specific geographical location with unique, internal physical and cultural characteristics (option D). The characteristics may include the physical elements like landforms, climate, soils, and flora and fauna present, as well as human elements such as architecture, customs, laws, language and religion that form the cultural landscape of the place. For example, the site of Paris is defined by characteristics like its position on the River Seine, its temperate climate, and cultural attributes like French language, the Eiffel Tower, and its renowned cuisine. It defines a place in its own, unique context, separate from other locations.
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which landform in canada, located along the hudson bay, is rich in minerals?
Answer:
The Canadian Shield is one of the world's richest areas in terms of mineral ores. It is filled with substantial deposits of nickel, gold, silver, and copper. Throughout the Shield there are many mining towns extracting these minerals
on the eastern side of the rocky mountains, chinook winds are enhanced when ____.
On the eastern side of the Rocky Mountains, Chinook winds are enhanced when the winds are forced to rise over the mountains.
As air is forced to move over the mountains, it is lifted to higher altitudes, where it cools and loses moisture in the form of rain or snow. As the air descends down the leeward side of the mountains, it warms up and becomes drier. This is known as the rain shadow effect. The descending warm and dry air mass picks up speed and becomes a Chinook wind. The Chinook wind can cause a rapid increase in temperature, sometimes by as much as 40°F (22°C), within a few hours. This rapid temperature increase can melt snow rapidly, leading to flooding and other hazards. Despite its potential dangers, Chinook winds are also appreciated for their warming effect during cold winter months.
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mexico city was built on mud deposits. how will this affect the earthquake hazard there?
Mexico City being built on mud deposits can significantly affect the earthquake hazard in the area. The presence of mud deposits amplifies the seismic hazard in Mexico City due to a phenomenon known as liquefaction.
Liquefaction occurs when saturated loose sediments, such as mud, lose their strength during an earthquake, resulting in a loss of solidity and becoming temporarily liquid-like.
When seismic waves pass through these deposits, the water content within the mud causes it to lose its strength, leading to the ground behaving like a fluid.
During an earthquake, the liquefied mud can lead to several hazardous effects. Buildings and infrastructure may sink, tilt, or even collapse. Ground shaking can cause fissures and cracks in the soil, exacerbating the instability. Furthermore, the liquefied mud can amplify seismic waves, resulting in increased ground shaking and damage to structures.
In the case of Mexico City, its location in a basin surrounded by mountains contributes to the amplification of seismic waves. The combination of soft mud deposits and the basin's geological characteristics creates a "bowl effect," trapping and intensifying the shaking caused by earthquakes.
Overall, the presence of mud deposits in Mexico City increases the earthquake hazard and poses significant challenges for the city's infrastructure and population. Building codes, engineering practices, and ongoing monitoring efforts are crucial to mitigate the potential impacts of earthquakes in this vulnerable area.
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What agricultural challenges do Africans face, and how do these affect food production in the continent?
What similar challenges do both South Africa and Nigeria face in the future?
Agricultural challenges in Africa include limited access to modern farming technologies, lack of infrastructure, climate change, and poor governance.
These challenges negatively affect food production in the continent by reducing yields and making it difficult to transport and store crops. As a result, many African countries are unable to produce enough food to meet the needs of their growing populations.
Both South Africa and Nigeria face similar challenges in the future, such as increasing population growth, urbanization, and changing dietary habits. These factors are expected to put pressure on food production systems, making it more difficult to meet the food demands of their respective populations.
Additionally, climate change and its impacts, such as droughts and floods, will further exacerbate the existing challenges in the agriculture sector. Addressing these challenges will require significant investments in modern technologies and infrastructure, as well as improving governance and promoting sustainable agricultural practices.
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the rock debris which accumulates at the base of steep slopes by gravitational action is called
The rock debris that accumulates at the base of steep slopes due to gravitational action is called talus.
Talus is composed of fragments of rocks of various sizes and shapes, ranging from small pebbles to large boulders. Talus is formed by weathering, erosion, and gravity acting on rocks at the top of the slope. The rock fragments break off from the main rock mass due to the physical or chemical weathering, and then slide or roll down the slope, accumulating at the bottom. Talus slopes are common in mountainous regions and can be hazardous to climbers and hikers.
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