An energy source that can be replaced by natural processes in a short amount of time
incapable of being used up
energy from the sun in the form of heat and light
energy obtained from heat energy inside Earth
An energy source caused by moving air; it is the fastest growing energy source for generating electricity
electricity generated using the power of falling water to turn turbines, usually associated with dams
a renewable resource that comes from living things and can be burned to release energy
An energy source that is used much faster than it can be replaced by nature
material formed over millions of years from the remains of ancient plants and animals
a brown-black combustible sedimentary rock that formed from plant remains
a non-renewable, fast depleting, fossil-fuel used for energy
A mixture of hydrocarbon gases that is used as a fuel and in the manufacture of organic compounds
The splitting of uranium atoms to release energy
harmful or poisonous substances introduced into an environment
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