science

2. removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral.
4. coal, natural gas, oil, and nuclear energy.
5. The extraction of metal ore or fossil fuel resources from beneath the surface of the ground.
7. energy that comes from a source that won't run out
9. a form of energy released from the nucleus, the core of atoms, made up of protons and neutrons.
10. reduces the pH of water resource
11. a form of unconventional oil that is extracted directly from shale rock formations.

1. a complex mixture of hydrocarbons that occur on Earth in liquid, gaseous, or solid form.
3. a byproduct from nuclear reactors, fuel processing plants, hospitals and research facilities.
6. white, icelike solids that consist of methane and water
8. Energy is not created or destroyed but merely changes forms, going from potential to kinetic to thermal energy.