Which one of the following is a wrong statement?
Correct answer: B. Ozone in upper part of atmosphere is harmful to animals.
- A. Most of the forests have been lost in tropical areas.
- B. Ozone in upper part of atmosphere is harmful to animals.
- C. Greenhouse effect is a natural phenomenon.
- D. Eutrophication is a natural phenomenon in freshwater bodies.
Explanation
Ozone present in upper atmosphere forms a distinct layer that is known as ozone layer. Ozone layer is necessary for the survival of life on earth as it blocks harmful UV rays of sun from reaching earth's surface.
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