question_answer

The major environmental problems arise due to the human activity. The human activity has caused a lot of damage to the environment and today we are facing the problem of global warming. Which one of the following problems, which is not the major environment problems resulting from human interference, in the nitrogen cycle?

A)  Eutrophication                                

B)  Global warming

C)  Depletion of ozone layer

D)  Melting of ice

E)  None of these