Across
- 4. pollution to all water sources above ground, such as rivers, lakes, seas, and oceans,
- 6. Improperly discarded waste, such as fragments of plastic, rubber, or other manmade materials
- 7. when all of the oxygen used up so the oxygen needing plants die
- 8. most common type of water pollution
Down
- 1. too many nutrients for the water-based ecosystem
- 2. type of pollution caused by agriculture
- 3. naturally occurring form of water contamination
- 5. when harmful substances contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.