Across
- 4. a natural, unlearned behavior (n)
- 5. carry pollen from one flower to another (v)
- 7. able to change to a new environment (adj)
- 9. layer of gases around the earth (n)
- 11. the place where bees live (n)
- 13. study of the stars and planets (n)
- 15. continue living (v)
Down
- 1. belonging to a place, originally (adj)
- 2. very old (adj)
- 3. no one lives there (adj)
- 6. strange, difficult to understand (adj)
- 8. try (v)
- 10. a very small piece of something (n)
- 12. a gas humans need to stay alive (n)
- 14. pay for something (v)