Across
- 2. Organelle where cellular respiration takes place
- 4. a biological community of interacting organisms and their physical environment
- 8. living factors
- 9. A set of components working together
- 10. convert light energy from the sun and store it as chemical energy. Provides food for an ecosystem.
- 12. nonliving factors
- 13. A process that converts organic materials into nutrient-rich soil
- 14. flow of energy through living things in an ecosystem
- 16. Matter is _____________ which means that it is not created or destroyed
Down
- 1. these organisms break down matter and return it to an ecosystem
- 2. process of matter moving from one form to another
- 3. Energy is NOT _____________.
- 5. physical substances in the world around us are made up of ___________.
- 6. the mixture of gases that surround the Earth
- 7. Sugar made by a plant during photosynthesis
- 11. eat producers and gain matter and energy
- 15. Organelle where photosynthesis takes place