Across
- 3. a tool that measures water clarity (2 words)
- 6. trace elements that can be toxic in small amounts
- 8. H2O molecule
- 9. the amount of oxygen in water (2 words)
- 10. a process using evaporation to clean water
- 11. the amount of salt in water
- 12. a process of passing water through layers to clean it
- 13. a measure of water clarity
- 14. an element in fertilzer that causes algal blooms
Down
- 1. a measure of pH
- 2. cause "blue baby" syndrome
- 4. the amount of suspended sediment (3 words)
- 5. insects
- 7. a process that makes fresh water from salt water