Biology

Valentin Reynolds

7 May, 21:33

Which sentence describes air pollution?

A. Soot and dust is released into the air from the smokestack of a

power plant.

O B. An audience watches a documentary film about the threat of

global warming.

O

C. An old car is dumped into a local stream, where it sits and rusts.

D. All the trees in a forest are cut down and removed, and no new

trees are planted.