Question

Why do nations need to work together to combat air pollution?

A.
Air pollution has very different causes than other types of pollution.

B.
Air pollution has been declared the top priority internationally.

C.
Some nations do not manage air pollutions well.

D.
Air pollution moves easily from one region to another.

Answer 1

I would say D because it’s fairly easy for air to travel to different regions since non one can control were air goes