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02/11/2021 12:14 pm
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Which one of the following is a wrong statement?
(1) Greenhouse effect is a natural phenomenon.
(2) Most of the forests have been lost in tropical areas.
(3) Eutrophication is a natural phenomenon in freshwater bodies.
(4) Ozone in upper part of atmosphere is harmful to animals.
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02/11/2021 12:15 pm
Correct answer: (4) Ozone in upper part of atmosphere is harmful to animals.