Across
- 2. It refers to water
- 4. It comes from home and industries.
- 5. Wastes such as plastic bags can _____ and kill aquatic animals
- 7. Toxic waste can _______ aquatic plants and animals.
- 9. Examples of unwanted bottles and cans in river.
Down
- 1. Untreated industrial waste must be _____ before releasing into rivers or sea.
- 3. Untreated sewage from homes and industries contain many harmful ________, which cause people to become ill.
- 6. When factories discharge untreated toxic waste into drains, the waste will __________ the water.
- 8. Birds may _____ the litter and choke to death.