Содержание
- 2. Water pollution. People throw out dust into the rivers
- 3. Big tankers emit tons of oil into the sea water. Wild life suffers from this pollution
- 4. Big factories pollute the air
- 5. Noise pollution. There is mach noise in the big cities because of air jets, city transport
- 6. Car fumes pollute the air we breath
- 7. The railways change the relief
- 9. Скачать презентацию