Unit 11

5. ________________ pollution can cause hearing problems.

1. Our ________________ is becoming more and more polluted.

3 ________________ pollution affects drinking water, rivers, lakes and oceans.

2. ________________ is destroying large areas of tropical rain forest.

6.________________ pollution can cause diseases such as asthma and bronchitis.

4._______________ pollution can lead to famines if the plants are unable to grow in it.