Across
- 2. surroundings or conditions in which a person, animal or plants live
- 5. the natural home or environment of an animal or plant
- 9. the presence of harmful substances in the environment
- 10. non living physical or chemical substance
- 11. a gas which forms a protective layer in the stratosphere
- 12. a sustainable unit where living and nonliving things interact together
- 13. living components of ecosystem
Down
- 1. at high risk of extinction
- 3. substance that organism needs for their growth
- 4. variety of life
- 5. a situation or substance that poses significant risk to environment
- 6. plants which make their own food
- 7. a species confined to a specific geographic location
- 8. any event causing damage to environment and life