1.acid rains
2. deforestation
3. air pollution
4. water pollution
5. flooding
6. ozone layer
7. pollutant
8. vegetation
9. relief
10. desertification
Acid rain is a rain that contains large amounts of harmful chemicals as a result of burning substances such as coal and oil.
Deforestation is destroying large areas of tropical rain forest.
Air pollution is one of the biggest problems in the world.
Some roads have been closed because of flooding.
The railway track will have to be cleared of vegetation if it is to be used again.