Question

the first fuel used by human beings to produce energy was ____________​

Answer 1

Explanation:

The first known use of fuel was the combustion of wood or sticks by Homo erectus nearly two million years ago. Throughout most of human history only fuels derived from plants or animal fat were used by humans.

♡──━━━━━━⊱✿⊰━━━━━━──♡

$\huge \pink{✿} \red {C} \green {u} \blue {t} \orange {e} \pink {/} \red {Q} \blue {u} \pink {e} \red {e} \green {n} \pink {♡}$

Answer 2

Answer:

Coal one of human kind's earliest fuel sources, is still used today to generate electricity

hope it's helpful for you.