Across
- 4. resources resource that exists in fixed amounts within Earth's crust
- 9. yield replacement of renewable resources at the same rate they began consuming
- 11. water that is held on surface
- 12. substances that can adversely affect the survival of organisms
- 14. rocks deposited far from their origins
Down
- 1. layer of crushed sand and stone that naturally accumulates on or near the Earth's surface
- 2. pollution pollutants in the air that become harmful to humans and the environment
- 3. removing of salt from ocean water to provide freshwater
- 5. Resources resources found within or on Earth
- 6. Resources resources that the earth provides
- 7. grinding parent rock to remove ore
- 8. base of unweathered parent material
- 9. building syndrome indoor air pollution linked to illness
- 10. productive lad that becomes desert
- 13. natural resource that can be mined as long as it is profitable