Energy
Nudrogen fuel cells
Wind
Solar energy is commonly used for solar water heaters and house heating
hudropwer : : : :
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petroleum
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biomass
Geothermal: avantage-The plants are long lasting,allows double recycling. disadvantage-Earthquakes,enviromental side effects 
Solar
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one of the oldest and largest sources of renewable energy,
Biomass is organic, meaning it is made of material that comes from living organisms, such as plants and animals.
produce electricity by combining hydrogen and oxygen atoms.
Nuclear:Disadvantage: Nuclear waste. Advantage:high power output
Advantage: Free energy, Disadvantage: Noisy
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volcanoes, fumaroles, boric-acid,fumaroles and geysors
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Natural gas:Advantage-natural gas is less expensive than other fossil fuels.Disadvantage-natural gas is a limitted source of energy and will eventually run out..
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Coal-Subbituminous coal is black in color and is mainly dull (not shiny)
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