Indicators of Pollution (B2)
- Created by: caits
- Created on: 18-03-14 20:06
Fullscreen
What happens when a stream/river is polluted:
1. Pollutant is added ----> kills some living things
2. Micro - organisms decompose them. They respire and use up oxyen
3. Lack of oxygen kills other organisms…
Comments
No comments have yet been made