Environment
Across
- 4. acute water shortage
- 6. feeding relationships between species
- 7. low levels of oxygen
- 8. rain rain that is acidic
- 10. water converted to water vapor
- 12. the cessation of existence of a species
- 14. external conditions with which organism interacts
- 15. natural occurring mixture of hydrocarbons
- 17. species at risk of becoming extinct
Down
- 1. habituate of a species within its population
- 2. the diversity of life in all its forms
- 3. displacement of soils
- 5. land used for growing crops
- 8. non living chemical and physical factors of environment
- 9. requires air or oxygen
- 11. receives very little rain
- 13. the functional unit of all known living organisms
- 16. semi enclosed body of water