adrii727 adrii727

25-04-2017
Biology

contestada

The main energy source used by humans has changed over time from
A. fossil fuels to solar.
B. wood to wind.
C. wood to fossil fuels.
D. fossil fuels to nuclear.

Respuesta :

oniszczuk7914 oniszczuk7914

25-04-2017

for what i know of its C

Answer Link

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