Across
- 1. number of organisms change based on food
- 6. breathing oxygen
- 7. harmful oil
- 8. not derived from living organisms
- 9. to move
- 11. something that has life
- 14. plants use sunlight to make their own food/energy
- 15. a gas made by plants that animals use for respiration
Down
- 2. something that has no life
- 3. the space around an organism
- 4. gas made by animals that plants use
- 5. relating to living organisms
- 10. what an organism must have to survive
- 12. to get used to
- 13. all the biotic and abiotic organisms in an enviorment