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Crossword Minerals and Energy Resources

Across
Heat extracted from Earth's interior and used to generate heat and electricity at the surface
Power generated by converting the energy of flowing water to electricity
Any fuel derived from ancient organic remains and formed by geological processes
Any resource that cannot be replenished by natural processes as quickly as it is consumed
A sedimentary rock made mostly or organic carbon that will burn without refining
Energy produced by the burning of organic material
Compounds of hydrogen and carbon from organic sources
Any naturally occuring substance or phenomenon that can be used to generate useful heat, light, and/or electricity
Down
Energy resource that forms when crude oil is heated above 100 degrees Celsius during burial
Process by which fluids are injected into a dense rock in order to expand naturally occuring fractures so that trapped natural gas and oil can flow more freely
A complex mixture of different organic compounds that ca be refined to manufacture gasoline, plastics, nylon, and other materials
The known amount of mineral deposits that can be profitably extracted from the Earth
A substance of plant or animal origin that can be burned or processed to generate energy
Any useful substance or phenomenon that can be replenished by natural processes faster than it is consumed
A radioactive substance that is use to generate electricity
Any naturally occurring inorganic solid that is useful to humans and can be reasonably extracted at a profit now or in the future
A device that converts sunlight to electricity