1. The fish have died because the river water is heavily polluted.
2. Health affection from air pollution include lung cancer, and respiratory diseases.
3. Acid rain causes serious damages to plants and trees.
4. If the air wasn’t dirty, Nick wouldn't sneeze so much.
5. The main gases that leed to acid rain are sulfur dioxide and nitrogen dioxide.
6. There is a danger of serious contamination from radioactive waste.
7. Hundreds of death fish were found floating in the river near the factory.
8. Unprocessed sewage can spread disease and contaminate drinking water sources.