Across
- 3. The method used to collect coal.
- 4. ___ oil is a liquid mixture of carbons.
- 8. Oil is mostly used for this reason.
- 11. Coal is mostly used for this reason.
- 12. A process that breaks rocks to get natural gas.
- 16. Another word for oil.
- 17. The compound that makes natural gas
- 18. A liquid fossil fuel
- 19. An environmental problem of transporting oil.
Down
- 1. Fossil fuels are this type of resource.
- 2. The release of acid water from a coal mine.
- 5. The method used to collect oil.
- 6. Millions of gallons are used to fracture rock.
- 7. A type of lung disease that miners can get.
- 9. A fossil fuel that is used for heating homes.
- 10. Natural gas is mostly used for this reason.
- 13. The type of growth for our population.
- 14. A type of mining that leaves a large and deep hole.
- 15. A solid fossil fuel formed from plants.