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 oniszczuk7914
  • 25-04-2017
for what i know of its C
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