Across
- 3. Increase of nutrients in lake or pond causing decrease of oxygen
- 4. Depositing sediments in water
- 7. Used as water quality testers, no backbone
- 9. A form of nitrogen found in bodies of water
Down
- 1. Amount of this gas dissolved in water
- 2. A measurement of acid
- 5. Murkiness of water
- 6. Chemical, physical and biological characteristics of water as it is fit fir intended use
- 8. Measurement of amount of energy in molecules, measure with a thermometer