How depletion of ozone layer affects living organisms?
- The thinning of the ozone layer results in an increase in the levels of UV radiation reaching the earth’s surface. In humans, increased UV radiation causes ageing of skin, damage/injuries to skin cells and skin cancers including melanoma.
- It also causes cataract and even permanent damage to cornea, weakening of immune system. UV radiation also causes mutations in living organisms.
- DNA and proteins of living cells absorb the UV rays, high energy of UV radiation breaks the chemical bonds of these molecules, thus affecting the normal metabolism.
- UV radiation inhibits photosynthesis in most phytoplanktons as it penetrates through the ocean water. This affects the entire food chain in aquatic ecosystem.
Concept: Ozone Layer Depletion - Ozone Depletion in the Stratosphere
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