Across
- 3. A river or stream flowing into a larger river or lake.
- 5. The contamination of water bodies, usually as a result of human activities.
- 6. Water that has been contaminated by human use.
- 8. A pollution that come from many different sources and locations.
- 9. A mountain or an elevated area that separates two drainage basins.
Down
- 1. A single identifiable source of air water, or thermal energy
- 2. A wide strait or waterway between two landmasses.
- 4. A large natural or artificial lake used as a source of water supply
- 5. A measure of suitability of water based on physical, chemical, and biological characteristics.
- 7. nutrients in a lake or other body of water that causes a dense growth of plant life and death to animals.