Across
- 5. – A large, slow-moving mass of ice.
- 7. – Harmful substances contaminating the environment.
- 8. – A community of living organisms and their environment.
Down
- 1. – Dangerous or harmful.
- 2. – A method of extracting oil or gas by cracking underground rock.
- 3. – A structure for growing plants; also refers to gases trapping heat in Earth's atmosphere.
- 4. – To process waste into reusable materials.
- 6. – The permanent disappearance of a species.