Across
- 3. Used to store energy for the planet and the oxygen is released in the atmosphere
- 5. Something that acts like a storage source
- 6. Resulting from living things
- 10. Accompanied by the release of heat
- 12. The substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
- 13. The process of burning something
- 15. Chemical process formed by plants
- 16. Accompanied by or requiring the absorption of heat
- 17. The waste and remains of living organisms
- 18. The production of chemical compounds by reaction from simpler materials
- 19. dioxide Greenhouse gas
- 20. Not derived from living organisms
Down
- 1. The transfer of carbon through the organisms in a food web
- 2. The minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
- 4. respiration Chemical process performed by plants and animals
- 7. The central most important part of an object;center
- 8. Come from dead remains of ancient plants and animals
- 9. Positive electrical charged particle
- 11. The process by which organic substances are broken down into simpler organic matter
- 14. Negative charged particle