Across
- 5. something that threatens an animal species.
- 6. the water on or surrounding the surface of the globe, including the water of the ocean.
- 7. the air
- 9. the crust and upper mantle of the earth.
- 11. were some one has made a __________.
- 12. existing in space.
Down
- 1. does not exist any more
- 2. the part of the earth's crust, waters, and atmosphere that supports life.
- 3. the restoration and preservation of works of art.
- 4. a tool to help you navigate were you are.
- 8. every thing depends on an _________ too work.
- 10. a place were an animal lives.