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Renewable energy sources include water, wind, solar, and biomass, since these cannot be used up. About what share of the world's total energy currently comes from nonrenewable fossil fuels instead?
AAbout 40%
BAbout 60%
CAbout 85%
DAbout 15%
Answer & Solution
Correct answer: C. About 85%
1. Renewable sources like water, wind, solar, and biomass are defined as sources that cannot be used up.
2. Despite renewable energy's growing role, about 85% of the world's total energy still comes from nonrenewable fossil fuels, meaning oil, natural gas, and coal.
3. That leaves only a small remaining share, roughly 15%, coming from renewable and other sources combined.
4. 40% and 60% understate the dominance of fossil fuels, and 15% is instead the renewable share, not the fossil fuel share.
_Source: OpenStax College Physics (CC BY 4.0), Ch 7 "Work, Energy, and Energy Resources", section 7.9 World Energy Use_
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