Across
- 2. another word for H20
- 4. A freshwater pond that only appears in the spring
- 6. A solid material that settles in water and must be separated when accumulated in treatment plants
- 8. Water added in rivers or aquifers that increases the water table
- 9. The ability to pass through things such as pores
- 10. The scientific research of water and its functions throughout Earth
- 12. An ecological community and environment working together as a single unit
- 14. A substance that commonly pollutes water
Down
- 1. A chemical food element that must be maintained, if not maintained it can cause harm to aquatic life oxygen and produce algae growth
- 3. Too much algae in an environment because of excess nitrates
- 5. Elements/compounds required for plants and animals to survive, grow, and reproduce
- 7. The level measure of how acidic a substance is
- 9. Water that is safe, appropriate, and acceptable for human, plant, or animal consumption
- 11. A population of organisms of different species living together in a certain environment
- 13. Particles at the bottom of liquids; particles carried by water, wind, etc