Across
- 2. percentage of energy fossil fuels provide to earth
- 5. Remains of ancient organisms that with time and pressure converted into coal, oil, or natural gas
- 8. Energy forms that can be used directly as they appear in nature
- 9. Type of primary energy source
- 10. Derived from sources that will run out eventually.
- 11. An energy source that can be easily replenished
- 12. 5th largest producer in South America
- 13. Two necessary elements for the creation of coal
- 14. Common type of secondary energy sources
Down
- 1. What accelerates acid drainage
- 3. The ability to do work
- 4. type of countries that use more energy
- 6. Energy in a transformed state
- 7. Environmental impact due to underground mining
- 9. percentage of Ecuador's oil export