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Unformatted text preview: contains the base uracil in place of thymine. RNA is single stranded and thus does not form a double mix. Where do we get the majority of our energy?What are some problem associated with these sources of energy? What are some of the possible renewable energy sources that are being developed and what problems do they have? Most of the worlds energy is supplied by the burning of fossil fuels, a nonrenewable source. The burning of fossil fuels causes pollutant and gases to enter the air. Burning fossil fuels and burning to clear land for farming adds CO2, a various means. Renewable energy sources include wind power, hydropower, geothermal energy, and solar energy. Wind power requires a lot of land coverage for it to be developed, Hydropower development which involves the building of enormous dams, and solar energy development are still very costly....
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- Spring '11