Across
- 4. crushed ore that is melted to separate impurities from molten metal
- 5. unwanted noise
- 9. mining on the ocean floor
- 10. 3% of Earth's water
- 13. liquid that passes through waste in a landfill
- 14. air pollution from cars
Down
- 1. splitting of two atoms
- 2. energy used from harnessing the wind
- 3. energy used from the movement of water
- 6. minerals with no commercial value
- 7. renewable energy from the sun
- 8. if it can be broken down by biological processes
- 11. when water vapor goes into the atmosphere
- 12. permanent waste disposal facility
- 15. 97% of Earth's water