Environmental Studies ยท Geography
Deforestation and Land Degradation
2,532 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
Which of the following is a major cause of deforestation?
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Natural disasters
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Agricultural expansion
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Urbanization
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Climate change
B
Correct answer
Explanation
Agricultural expansion, particularly for large-scale farming, is a significant driver of deforestation, as forests are cleared to make way for crops or grazing land.
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 a major cause of soil erosion in India, as the removal of trees exposes the soil to wind and water erosion.
What is the primary cause of desertification in desert regions?
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Deforestation
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Overgrazing
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Drought
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Climate change
D
Correct answer
Explanation
Climate change is the primary cause of desertification in desert regions, as it leads to changes in precipitation patterns, increased temperatures, and reduced water availability.
What are the main causes of soil erosion?
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Wind and water
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Deforestation
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Overgrazing
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All of the above
D
Correct answer
Explanation
The main causes of soil erosion are wind and water, deforestation, overgrazing, and improper farming practices.
What are some of the consequences of soil erosion?
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Loss of soil fertility
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Increased flooding
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Desertification
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All of the above
D
Correct answer
Explanation
Soil erosion can lead to loss of soil fertility, increased flooding, desertification, and other environmental problems.
Which of the following is NOT a major environmental impact of agriculture?
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Deforestation
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Water pollution
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Soil erosion
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Climate change
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Biodiversity loss
D
Correct answer
Explanation
Climate change is primarily caused by the burning of fossil fuels, not agriculture.
What is the primary cause of soil erosion in agricultural areas?
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Wind
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Water
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Tillage
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Deforestation
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All of the above
E
Correct answer
Explanation
Wind, water, tillage, and deforestation can all contribute to soil erosion in agricultural areas.
What is the primary cause of deforestation in tropical regions?
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Agricultural Expansion
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Urbanization
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Mining Activities
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Natural Disasters
A
Correct answer
Explanation
Agricultural expansion, particularly for crops like soybeans and palm oil, is the primary cause of deforestation in tropical regions.
How do mangroves contribute to carbon sequestration?
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By absorbing carbon dioxide from the atmosphere
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By storing carbon in their biomass and sediments
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By reducing coastal erosion and protecting carbon sinks
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All of the above
D
Correct answer
Explanation
Mangroves play a significant role in carbon sequestration through various mechanisms, including carbon dioxide absorption, biomass storage, and erosion control.
Which of the following is NOT a type of plant-human conflict?
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Deforestation
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Pollution
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Overgrazing
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Mutualism
D
Correct answer
Explanation
Mutualism is not a type of plant-human conflict, but rather a type of interaction between two organisms that benefits both organisms.
What is the main cause of desertification?
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Climate Change
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Deforestation
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Overgrazing
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Poor Irrigation Practices
B
Correct answer
Explanation
Deforestation is the main cause of desertification, as it removes vegetation that helps to hold soil in place and prevent erosion.
What is the impact of desertification on human populations?
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Loss of Agricultural Land
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Water Scarcity
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Food Insecurity
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Migration
Correct answer
Explanation
Desertification has a devastating impact on human populations, leading to loss of agricultural land, water scarcity, food insecurity, and migration.
What are some of the strategies to combat desertification?
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Reforestation
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Sustainable Agriculture
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Water Conservation
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Land Management
Correct answer
Explanation
Combating desertification requires a combination of strategies, including reforestation, sustainable agriculture, water conservation, and land management.
What is the long-term impact of desertification on ecosystems?
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Loss of Biodiversity
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Disruption of Carbon Cycle
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Increased Soil Erosion
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All of the above
D
Correct answer
Explanation
Desertification has long-term impacts on ecosystems, including loss of biodiversity, disruption of the carbon cycle, and increased soil erosion.
What is the primary cause of desertification?
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Climate change
-
Overgrazing
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Deforestation
-
All of the above
D
Correct answer
Explanation
Desertification is caused by a combination of factors, including climate change, overgrazing, deforestation, and poor land management practices.