Across
- 1. form of carbon in the air and water
- 3. an organism that needs to eat to get energy
- 8. the part of a cell where photosynthesis happens
- 10. all organisms release this
- 14. name for organisms that do photosynthesis
- 16. process that releases carbon
- 17. matter in living things
Down
- 2. form of carbon in living things
- 4. organisms that break down dead matter
- 5. non-living matter
- 6. process that takes in carbon
- 7. a type of atom (a tiny piece) that makes up molecules such as carbon dioxide
- 9. closed ecosystem made by humans
- 11. without this, plants cannot do photosynthesis
- 12. the name for living things
- 13. all living and nonliving factors in an area
- 15. the requirement for photosynthesis