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Keywords
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energy policy, energy source, limitation, Oak Ridge National Laboratory, BioEnergy Science Center, Dr. Martin Keller, alternative fuel source, alternative energy resource, energy portfolio, biofuel, solar, wind, geothermal, fossil fuel, oil, coal, natural gas, nonrenewable, non-renewable, negative, pollution, global climate change, energy resource, renewable, inexhaustible, sun, transform, electrical energy, photovoltaic cell, charge, solar thermal power plant, turbine generator, carbon dioxide, wind turbine, rotor, generator, wind farm, geothermal energy, nuclear, fusion, plant, ethanol, methane, biodiesel, ethanol, poplar tree, alcohol, cellulose, alpaca, microorganism, wood beetle, enzyme, bacteria, grub, alternative
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