Which one is wrong statement?
A. Ozone in the upper part of atmosphere is harmful to animals
B. Greenhouse effect is a natural phenomenon
C. Eutrophication is a natural phenomenon in freshwater bodies
D. Most of the forests have been lost in the tropical area
Answer:A
Which one is wrong statement?
A. Ozone in the upper part of atmosphere is harmful to animals B. Greenhouse effect is a natural phenomenon C. Eutrophication is a natural phenomenon in freshwater bodies D. Most of the forests have been lost in the tropical area