Across
- 2. combination of rock and soil that makes up Earth's crust
- 4. average weather conditions in a region over a period of years
- 7. mixture of gases that make up the atmosphere
- 9. the control of plants and animals by humans
- 10. tasteless colorless natural liquid resource
- 11. surface to the atmosphere and back to the surface
- 12. natural inorganic substances in or on Earth
- 13. movement of water from the
- 15. all the water on earth
- 17. gaseous layer that encompasses Earth
- 18. fuels formed from the remains of dead animal and plant material deposited in a previous geologic time.
Down
- 1. resources that cannot be replaced after use.
- 3. all the plants and animals that live in the wild
- 5. all the interactions between climate, the solid earth, water, and living things.
- 6. movement of air
- 8. things found in nature, such as forests, mineral deposits, soil, and fresh water, that have economic value.
- 14. all the communities of living things on Earth
- 16. outer layer of Earth's surface that supports life