A.1. Answer the following questions very briefly. 1. What is pollution?

2. How does pollution affect the environment?

3. How does the reduction of the ozone layer affect us?.
4. Mention four different kinds of pollution.

5. What are the two chief causes of environmental pollution?

6. What is the main cause of water pollution?
7. Mention any two causes of noise pollution.
8. What is the most disturbing consequence of increasing pollution?

A.2. Which words in the passage mean the following?

1. dangerous.
2. disproportion
3. intrusion
4. permanent