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Gennadij [26K]
3 years ago
6

When did humans begin to use fossil fuels as their primary source of energy?

Biology
2 answers:
ivanzaharov [21]3 years ago
7 0
I'm pretty sure it's Middle Ages
Rainbow [258]3 years ago
3 0
Hi there!

Your correct answer is the Industrial Revolution.

SOURCES:
I literally JUST took this quiz :P
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