Which one of the following is a wrong statement?
Which one of the following is a wrong statement?
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
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Correct Answer - B
Ozone `(O_(3))` is an isotope of oxygen which exists in so called ozone layer at a height of about 15-60 km in the middle and upper stratosphere and lower mesosphere. This ozone layer absorbs UV-rays of longer wavelength and protects life on Earth from damaging effects of these radiations.
Ozone in the lower atmosphere (troposhpere) is regarded as pollutant.
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