What is the ozone effect?
A.It is a cause of global warming. B.It is a reduction in the ozone layer. C.It is a greenhouse gas. D.It is a way to combat climate change.正确答案B
What is the ozone effect?
A.It is a cause of global warming. B.It is a reduction in the ozone layer. C.It is a greenhouse gas. D.It is a way to combat climate change.正确答案B