1, Air pollution can directly contaminate the surface of bodies of water and soil.

2, If we don't waste too much paper, we will save thousands of trees.

3, What would you do if you really got bad air pollution ?

4, Polluted water causes the death of aquatic animals such as fish and crabs.

6, The overuse of chemicals has an impact on agriculture due to land pollution.

7, Too much use of electric lights in cities may cause light pollution.

8, Water pollution is one of the most serious environmental problems of our time.