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The amount of carbon dioxide entering the atmosphere [from the burning of fossil fuels and respiration]
far exceeds the amount of carbon dioxide
entering the combined biosphere, hydrosphere, and lithosphere [through photosynthesis and other natural processes].
Fossil fuels are nonrenewable energy.
Renewable energy does not lead to climate change.
Hydropower, solar, wind, and biomass energy are examples of renewable energy.
Human society must move towards the increased reliance on renewable energy.
California will become 33% renewable [energy] by the year 2020.
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