Across
- 5. plants and animals that live in the wild
- 10. the mixture of gases that make up the atmosphere
- 12. resources that cannot be replaced after use
- 13. the source of almost all the energy used on the earth
- 16. resources that come from nonliving, nonorganic materials. like land, water, air, and minerals
- 17. the outer layer of the earth's surface that supports life
- 18. formed from the remains of dead animal and plant material deposited in a previous geologic time, typically millions of years ago
- 19. the gaseous layer that encompasses the earth
- 20. natural inorganic substances on or in the earth
Down
- 1. the movement of water from the earth's surface to the atmosphere and back to the surface
- 2. a resource that is available in limited quantity and can be completely used
- 3. resources replaced naturally
- 4. a resource that will not run out in the foreseeable future
- 6. all the interaction between climate, the solid earth (lithosphere), water(hydrosphere), and the living things on Earth(biosphere)
- 7. the average weather conditions in a region over a period of years
- 8. what makes up our population
- 9. a tasteless, colorless, liquid natural resource
- 11. control of plants and animals by humans
- 14. the movement of air
- 15. things found in nature, such as forests, mineral deposits, soil, and fresh water