Across
- 3. the nonliving parts of an ecosystem
- 6. a long period with little to no rainfall
- 9. an organism that makes its own food
- 10. helpful
- 11. an organism that breaks down dead plant and animal matter
- 13. the living or once-living parts of an ecosystem
- 14. an organism that eats other organisms
- 15. the place or environment an organism normally lives
Down
- 1. to cause damage
- 2. the introduction of a substance that can harm the environment
- 4. a series of events in a repeating pattern
- 5. an animal that is hunted by other animals
- 7. a living thing
- 8. an animal that hunts other animals
- 12. an area where living and nonliving parts of the environment interact