1.Which of the following is not a cause of global warming?
    A) air pollution.
    B) automobile pollution.
    C) smog and precipitaion.

2. Global warming is:
    A) an increase in the earth's temperature due to the use of fossil fuels and certain types industrial and agricultural processes   leading to a build up of "green house" gases in the atmosphere.
    B) a decrease in earth's temperature due to heat escaping through a hole in the earth's atmosphere.
    C) an increase in earth's temperature due to carbon dioxide entering earth's atmosphere from outer space.
 
3. One example of something that is being done to help the problem of global warming is:
    A) clean air act of 1980, which protested against global scale air pollution.
    B) clean air act of 1970, which protested local and regional air pollution.
    C) Kyoto protocol of December 1997, which protested local and regional air pollution.

4. What is the most significant gas included in air pollutants?
    A) ozone.
    B) propellants in spray cans.
    C) carbon dioxide.

5. What is air pollution?
    A) addition of harmful sun rays to the atmosphere.
    B) addition of harmful substances to the atmosphere.
    C) depletion of chemicals from the atmosphere.

6. In the future, scientists predict global warming will lead to...
    A) human allergies will worsen.
    B) the hole in the ozone layer will shrink.
    C) polar ice caps will melt, and global temperatures will rise.

7. Carbon dioxide, methane, nitrous oxide, and CFS are known as:
    A) "greenhouse gases"
    B) "local and regional pollutants"
    C) "global air pollutants"

8. Improperly vented heaters are causes of:
    A) local and regional pollution
    B) global scale pollution
    C) indoor air pollution

9. The lowest layer of the atmosphere is known as:
    A) troposhpere
    B) mesosphere
    C) stratosphere

10. The country which produces the most air pollutants is:
    A) Japan
    B) China
    C) United States

(answers to the quiz can be found by clicking here.)