2016 · Paper V · 5 marksFrequently asked

Describe Impact of Ozone layer depletion on different living organisms?

In short

Ozone depletion lets more UV-B radiation reach the surface, causing skin cancer, cataracts and weaker immunity in humans, damaging plant DNA and crop yields, and killing phytoplankton that sustain aquatic food webs. In Andhra Pradesh this threatens chilli and horticulture crops and the fisheries along its 974 km coastline.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Ozone layer depletion allows more UV-B radiation to reach Earth, causing serious harm to humans, plants, aquatic life, and biodiversity, notably in Andhra Pradesh's vulnerable regions. This increased UV exposure threatens ecological balance and human well-being by damaging DNA and disrupting biological processes.
Biological and Ecological Consequences
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Human Health Risks

Increased UV-B causes skin cancers, cataracts, and immune suppression, impacting public health in Andhra Pradesh's Rayalaseema drought belt with poor healthcare access. The World Health Organization links UV exposure to a rise in melanoma and non-melanoma skin cancers globally.

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Crop Damage and Food Security

UV radiation damages plant DNA and photosynthesis, reducing yields of chilli and horticultural crops vital to Andhra Pradesh's agrarian economy. Studies show UV-B reduces nutrient content and growth rates, threatening food security and farmer incomes.

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Biodiversity Impact

UV-induced genetic mutations disrupt wildlife in Andhra Pradesh's Eastern Ghats, undermining conservation efforts. Species reproductive failures and altered behaviors threaten ecosystem stability in this biodiversity hotspot.

Institutional and Implementation Challenges
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Regulatory Enforcement Gaps

India’s Ozone Depleting Substances (Regulation and Control) Rules, 2000, face enforcement issues in Andhra Pradesh, especially informal sectors where illegal use persists. The Montreal Protocol’s success depends on strict local compliance.

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Climate Change Interactions

Ozone depletion worsens climate impacts, complicating disaster management in Andhra Pradesh with erratic rainfall and temperature shifts. This synergy stresses agriculture and water resources, increasing vulnerability.

Conclusion
Ozone depletion poses multifaceted threats to health, agriculture, and ecosystems in Andhra Pradesh; enhanced enforcement, research, and community engagement are crucial for sustainable resilience. Addressing these challenges supports Sustainable Development Goals on health and life on land, ensuring a balanced environment for future generations.

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Hand-drawn diagram: Effects of higher UV-B. Effects of higher UV-B. Diagram (tree): Effects of higher UV-B; Ozone depletion; Humans: skin cancer, cataracts; Plants and crops: lower yields; Aquatic life: phytoplankton decline; Wildlife: biodiversity loss
Diagram: Effects of higher UV-B

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Pollution & solid waste; global issues; environmental legislation; disaster management policy; agricultural revolutions43 questions

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