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solar power is..
energy from the sun
is hydro power a renewable energy source?
yes
what is biofuel?
energy that comes from plants
can energy be made from cow manure?
yes
will petroleum last forever?
no
is petroleum a biofuel?
no
what is a fossil fuel made of?
fossil fuels are made of decayed dead plants and animal from long agos
what is a free energy source?
sun
can geothermal energy be made in a shrt time?
yes
will we be able to make biofuel in a few months?
yes