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UPSC Prelims 2022 – Question 22
Q22. “System of Rice Intensification” of Cultivation, in which alternate wetting and drying of rice fields is practiced, results in:
Reduced seed requirement
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UPSC Prelims 2022 – Question 21
Q21. Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?
a) Cotton
b) Rice
c) Sugarcane
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UPSC Mains – Explore the Impact of Soil Pollution on Food Security, Human Health, and the Environment (10 marks, 150 words)
Soil pollution, the presence of toxic substances in soil, poses a significant environmental and health threat. Induced by industrial waste and agrochemicals,
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UPSC Mains – Define Acid Rain and Explore Its Causes and Consequences (10 marks, 150 words)
Acid rain refers to precipitation, such as rain, snow, or fog, containing elevated levels of acidic compounds, primarily sulfuric acid (H2SO4) and nitric acid
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UPSC Mains – India’s Biodiversity: Comparing the Himalayas and Western Ghats, and the Role of the Biological Diversity Act of 2002 (15M, 250 words)
The Himalayas and the Western Ghats, both prominent biodiversity hotspots in India, showcase unique characteristics and diverse flora and fauna.
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UPSC Mains – Explore the Environmental Consequences of Infrastructure Projects and the Role of Environmental Impact Assessment (EIA) in Mitigating these Impacts (10M, 150 words)
The 2020 draft EIA Notification, replacing the 2006 version under the Environment (Protection) Act, 1986, anticipates and addresses early-stage environmental
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UPSC Mains – Explain the 30×30 initiative, its impact on biodiversity conservation, and climate change mitigation. Discuss the obstacles India faces in achieving this objective.
Against the backdrop of a 68% decline in global fauna since 1970 (WWF Living Planet Report 2022), the 30x30 initiative was launched during the UN biodiversity
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UPSC Mains – Evaluate the Impacts of Illegal Sand Mining in India and Propose Effective Strategies for Regulation and Sustainable Resource Management (15M, 250 words)
Illegal sand mining poses a significant challenge in India due to the decentralized governance of minor minerals under state laws
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UPSC Mains – India’s Leadership in G-20: Advancing ‘Resource Efficiency and Circular Economy’ for Global Sustainability (10 marks, 150 words)
India's focus on 'Resource Efficiency and Circular Economy' during its G-20 presidency underscores its dedication to responsible resource management
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UPSC Mains – The Significance of Keystone Species in Ecosystems (10M, 150 words)
Keystone species, often underestimated in abundance or charisma, wield a disproportionately profound influence on their ecosystems, capable of reshaping
