Scripts Unit 1 Listening Practice 1

Listening Practice 2

1. Water pollution is often caused by chemicals released from factories and fertilizer used by farmers. The factory waste and fertilizer flows into nearby rivers and makes the water unsafe.

2. Noise pollution is caused by a lot of things, but two major sources of noise pollution are construction sites and airports. The loud sounds cause people headaches and mental stress.

3. Air pollution has gotten worse in many cities due to increases in car traffic. Most cars release toxic chemicals in the air that are harmful to breathe.

4. Throwing away trash and waste that is not biodegradable, like plastics, causes soil pollution. Once the soil in an area becomes polluted, it cannot be used for agricultural purposes.