Across
- 3. any substance that damages the environment
- 5. available supplies for food, water, sunlight, and space in an environment
- 6. the process plants use to make sugar for food
- 8. an organism that makes its own food for energy
- 10. all of the conditions surrounding an organism
- 11. an organism that is eaten by another organism
- 13. the struggle for some limited resources
- 14. the outside layer of cells on the top and bottom of a leaf (2 words)
Down
- 1. new plants and animals that people bring into an ecosystem (2 words)
- 2. the process by which cells break down sugar to release energy ( 2 words)
- 4. an attempt tp preserve or protect an environment from harmful changes
- 7. a consumer that hunts and eats another animal to get energy
- 9. an organism that gets its energy by breaking down waste and dead organisms
- 12. an organism that can not make its own food