Across
- 1. energy forms that can be used directly as they appear in nature.
- 6. Remains of ancient organisms that with time and pressure converted into coal, oil, or natural gas.
- 9. 76% of consumption on oil.
- 10. A solid, combustible mineral made of carbon, formed from organic matter after million of years of compression.
- 11. 20% of global energy used per year.
- 13. Leach into nearby streams, picking up heavy metals and reacting as it travels.
- 15. Located above oil deposits.
Down
- 2. An energy source that can be easily replenished.
- 3. Derived from sources that will run our or will not be replenished in our lifetimes - or even many, many lifetimes.
- 4. Mountaintop removal.
- 5. Minimal effects on the surface.
- 7. energy in a transformed state.
- 8. Mountaintop Removal.
- 12. the ability to do work
- 14. Toxic materials from ash storage.