Biology, 18.06.2020 18:57 naiajNan

3. Nowadays many people are using sunscreen lotions as per doctor's advice to protect themselves from cancer of skin. When asked, the teacher told the class about a protective
cover of earth which is fast depleting due to a human activity. Name this cover and which
activity is the teacher referring to? Discuss in detail.

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3. Nowadays many people are using sunscreen lotions as per doctor's advice to protect themselves fr...