What is Global Warming and Ozone Depletion.

Ozone is a gas. It is concentrated in layer 25-30 Km above the earth’s surface. Ozone acts as a shield, protecting the earth from the damaging effects of ultraviolet radiation from the sun. Ultraviolet radiation is responsible for sunburn and skin cancer, snow-blindness, cataracts and eye-damage, ageing and wrinkling of skin, and reduced immunity to disease.

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