Across
- 3. the cycle we're disrupting by burning fossil fuels
- 4. an example would be a flock of birds and some fish
- 5. happens when fertilizer runs into a body of water
- 7. fish swimming in a pond
Down
- 1. the name for when phosphrous drains from a rock
- 2. the amount of salt in the water
- 6. the cycle in which bacteria playes a huge part