Energy

2. Example of type of coal mines
5. Top countries consumption of energy
6. method used to extracts ore over a large, flat terrain in long strips
9. method used to extract ore from below the surface of the earth
11. Is located above oil deposits
13. Ancient organisms that with time and pressure convert into coal, oil, natural gas.
14. energy in a transformed state

1. energy forms that can be used directly as they appear in nature
3. currently the main pollutant of surface water and is caused when water flows over materials contains sulfur forming acidity.
4. its flammable and consists mainly of methane and hydrocarbons, its occurring naturally underground
7. Energy derived from sources that will run out or will be replenished in our lifetime
8. the ability to do work
10. An energy source that can be easily replenished
12. Most abundant fossil fuel
15. extracted by drilling into the ground