Across
- 4. a large flow of water that goes into a lake or an ocean
- 6. an illness
- 10. activities to lead to a result
- 11. tending to spread
- 13. an animal or plant living in a place that is not where it naturally lives
- 14. a group of people who make decisions for a country or province
- 17. living or found in or near water
- 18. not contained
Down
- 1. knowledge about something
- 2. a small orange fish people keep as pets
- 3. to produce young
- 5. an animal people keep for pleasure
- 7. a group that lives in the same place
- 8. everything that lives in an environment
- 9. a group of animals or plants that are similar
- 12. does not cause harm
- 15. set something free
- 16. causes damage