NR1 4.04

Front

The major effect of air pollution on the climate has been:

Back

the greenhouse effect.

Front

Small pieces of material in the air similar to dust and liquid droplets are best known as:

Back

particulate matter.

Front

A catalytic converter on a car and a scrubber used on a smokestack:

Back

controls emissions.

Front

The greatest problems of air pollution are caused by: A. animals. B. humans. C. nature. D. water.

Back

humans.

Front

The best example of air pollution that affects wildlife, especially fish, is:

Back

acid rain.

Front

The two major types of air pollutants are:

Back

suspended solid particles and gases.