Question

7. carbon dioxide is a colorless odorless gas why is it considered a pollutant?

A. it gets into natural waters and kills fish

B. it promotes algal growths in natural waters

C. it causes respiratory illness in humans

D. it increases the warming of the atmosphere

Answer 1

Because D, it warms the atmosphere and pokes holes in the ozone layer.

Answer 2

D. it increases the warming of the atmosphere. Even though carbon dioxide is really great for plants, it is not so great for our atmosphere. It can even be harmful to your health.