Question

is oil and natural gas primary or secondary source of energy??
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Answer 1

Answer:

secondary is the correct answer

Answer 2

Answer:

Crude oil, coal, wind and natural gas are all primary energy sources. Electricity is not a primary energy source, it's an energy currency (see electricity as an energy currency for an in depth discussion). Likewise, secondary fuels are also energy currencies and aren't primary energy sources, they must be made

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