Across
- 3. Non-point source pollution is when the source of pollution either cannot be identified or may come from many sources
- 7. trash in water
- 9. a substance that pollutes something, especially water or the atmosphere.
- 10. the measure of relative clarity of a liquid
Down
- 1. the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae
- 2. made up of fine particles
- 4. The reduction in the concentration of dissolved oxygen in water, especially as a result of pollution.
- 5. the principle law governing pollution control and water quality of the Nation's waterways
- 6. the introduction of harmful materials into the environment
- 8. richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen