Across
- 3. – Fuel produced from plants or organic matter.
- 6. – Living and nonliving things interacting in one area.
- 10. – Using living organisms to remove pollution.
- 11. – Using organisms to check environmental health.
- 12. – A resource that can be naturally replaced.
Down
- 1. – Able to continue without harming the environment.
- 2. – Organic matter used as an energy source.
- 4. – Tiny living things like bacteria and fungi.
- 5. – Energy made from biological materials.
- 7. – The surroundings where organisms live.
- 8. – Natural fertilizer made from living organisms.
- 9. – Breaking down organic waste into fertilizer.