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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About Man and His Environment
Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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