Available Answers

1. 1.

   Choose the correct answer.

   1. Men's activities lead to 
      1. air pollution
      2. water pollution
      3. land pollution
      4. all of these
   2. Which one of the following is not caused by air pollution?
      1. asthma
      2. breathing problems
      3. AIDS
      4. slow growth of plants 
   3. Carbon dioxide, methane and water vapours are called
      1. saturated gases
      2. nobel gases
      3. natural gases
      4. greenhouse gases
   4. The soil becomes infertile and unfit for the organisms living in it because of
      1. excessive use of fertilizers
      2. dumping of solid wastes
      3. dumping of industrial or radioactive wastes
      4. all of these
   5. Noise pollution causes
      1. visual aliments
      2. hearing aliments
      3. asthma
      4. jaundice
   6. The climate of the earth is changing due to
      1. global warming
      2. acid rain
      3. AL Nino's effect
      4. natural calamities
2. 2.

   What is the contamination of air, water or land called?
3. 3.

   What are the main sources of air pollution?
4. 4.

   Name some greenhouse gases.
5. 5.

   What is caused by the dumping of solid wastes?
6. 6.

   How does air pollution affect our health?