Across
- 2. chemical substances to find mates
- 4. communication through sound
- 6. to blend in with the environment
- 8. when soundwaves bounce back off an object
- 10. to find one's way around
Down
- 1. communication through smell
- 3. form of light that produces no heat
- 5. communication through sight
- 7. used to mark territory or used in defense
- 9. resembling another species by behavior or physical appearance