Across
- 3. An old abandoned industrial sites
- 5. oxygen oxygen that is dissolved or carried in a given medium
- 6. One of the most life threatening impacts human have had the earth
- 7. bacteria What decaying algae is decomposed by
- 8. agents An agent capable of causing diease
- 12. pollution An increase of nitrates and phosphates in water
- 13. bloom An imbalense in the aquatic ecosystem
Down
- 1. The increase of nutrients in the water
- 2. biphenyls Chemical compound used to make electrical compoents
- 4. illnesses diseases are caused by pathogenic microorganisms
- 9. pollution When eroding soil particles are washed into the water
- 10. water water mixed with waste matter
- 11. pollution Excess heat in the water that forms contaminion