Environmental Studies ยท Geography
Deforestation and Land Degradation
2,619 Questions
Deforestation and land degradation address the environmental impacts of human activities on natural ecosystems. Key areas include soil erosion, forest fires, and the consequences of overgrazing. These subjects frequently appear in the geography and environmental science sections of competitive exams.
Causes of deforestationForest fires consequencesSoil erosion factorsDesertification impactsAgroforestry benefitsReforestation advantages
Deforestation and Land Degradation Questions
What is the primary cause of forest fires?
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Lightning strikes
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Human negligence
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Arson
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Volcanic eruptions
A
Correct answer
Explanation
Lightning strikes are the most common cause of forest fires, accounting for about 60% of all fires.
What is the primary role of fire in forest ecosystems?
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Nutrient cycling
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Pest control
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Seed dispersal
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Habitat creation
A
Correct answer
Explanation
Fire plays a crucial role in nutrient cycling by releasing essential elements from organic matter back into the soil, making them available for plant uptake.
How does environmental degradation contribute to poverty?
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It can lead to loss of agricultural productivity.
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It can increase the risk of natural disasters.
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It can reduce access to clean water and sanitation.
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All of the above
D
Correct answer
Explanation
Environmental degradation can contribute to poverty in a number of ways, including by reducing agricultural productivity, increasing the risk of natural disasters, and reducing access to clean water and sanitation.
Which of the following is an example of how poverty can lead to environmental degradation?
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People may cut down trees for fuel or to clear land for agriculture.
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People may overgraze their animals, leading to soil erosion.
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People may pollute water sources with sewage or chemicals.
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All of the above
D
Correct answer
Explanation
Poverty can lead to environmental degradation in a number of ways, including by forcing people to cut down trees for fuel or to clear land for agriculture, overgrazing their animals, and polluting water sources with sewage or chemicals.
What is the primary cause of habitat destruction in tropical rainforests?
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Climate Change
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Natural Disasters
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Urbanization
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Agricultural Expansion
D
Correct answer
Explanation
Agricultural expansion, particularly for cash crops like soybeans and palm oil, is the leading cause of deforestation in tropical rainforests.
What is the primary cause of soil erosion in India?
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Deforestation
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Overgrazing
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Intensive Agriculture
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Industrial Pollution
A
Correct answer
Explanation
Deforestation is the primary cause of soil erosion in India. The removal of trees and vegetation exposes the soil to the elements, making it more susceptible to erosion by wind and water.
What is the main cause of deforestation in the Amazon rainforest?
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Logging
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Agriculture
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Mining
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Urbanization
B
Correct answer
Explanation
Agriculture, particularly the expansion of cattle ranching and soybean farming, is the primary driver of deforestation in the Amazon rainforest.
Which of the following is not a consequence of deforestation in India?
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Soil erosion
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Loss of biodiversity
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Climate change
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Flooding
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Droughts
D
Correct answer
Explanation
Deforestation can lead to soil erosion, loss of biodiversity, climate change, and droughts, but it does not directly cause flooding.
What is the main cause of soil erosion in India?
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Deforestation
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Overgrazing
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Mining
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All of the above
D
Correct answer
Explanation
Soil erosion in India is caused by a combination of deforestation, overgrazing, and mining.
What is the main cause of increased flooding in India?
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Climate change
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Deforestation
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Both of the above
C
Correct answer
Explanation
Increased flooding in India is caused by a combination of climate change and deforestation.
What is the main cause of environmental issues in India?
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Rapid population growth
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Industrialization
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Deforestation
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All of the above
D
Correct answer
Explanation
Environmental issues in India are caused by a combination of rapid population growth, industrialization, and deforestation.
What is the main cause of deforestation in India?
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Agriculture
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Logging
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Mining
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All of the above
D
Correct answer
Explanation
Deforestation in India is caused by a combination of agriculture, logging, and mining.
Which of the following is NOT a benefit of agroforestry?
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Increased resilience to climate change
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Improved soil fertility
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Enhanced biodiversity
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Reduced yields
D
Correct answer
Explanation
Agroforestry offers a range of benefits, including increased resilience to climate change, improved soil fertility, and enhanced biodiversity. However, it does not typically lead to reduced yields. In fact, agroforestry can often increase yields by improving the soil's fertility and providing a more favorable microclimate for crops.
What is the main cause of coral reef degradation?
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Overfishing.
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Climate change.
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Pollution.
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All of the above.
D
Correct answer
Explanation
Coral reef degradation is caused by a combination of factors, including overfishing, climate change, and pollution.
How does forestry contribute to social development?
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By providing employment opportunities
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By improving air and water quality
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By providing a source of food and medicine
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All of the above
D
Correct answer
Explanation
Forestry can contribute to social development by providing employment opportunities, improving air and water quality, and providing a source of food and medicine.