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Energy

Across
An organic compound used to generate energy: includes coal,natural gas, and crude oil andetals such as uranium
A specialized semiconductor diode that converts visible light into direct current DC electricity
A modern version of the windmill used to convert kinetic wind energy into mechanical power or electricity
The energy harnessed from organic matter as it decomposed, when it is burned, or when it is treated with chemicals
The material removed from the surface of a mining pit and materials from the pit that are not used
A non renewable fossil fuel composed mainly of hydrocarbons and organic compounds hat is found in underground reservoirs.
Down
Power obtained by harnessing the radiant energy emitted by the sun
A naturally occurring radioactive metal used as fuel in nuclear reactors