Science第 76 / 120 题
Which of these is a renewable energy source?
a.Coal
b.Natural gas
c.Petroleum
d.Solar power
解析
Solar power comes from sunlight, which is replenished continuously, making it renewable. Coal, natural gas, and petroleum are fossil fuels that take millions of years to form and can be used up. Renewable sources do not run out on a human timescale.
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