Question

mostly used fossil fuel in our country is short answers ​

Answer 1

Answer:The United States gets 81% of its total energy from oil, coal, and natural gas, all of which are fossil fuels. We depend on those fuels to heat our homes, run our vehicles, power industry and manufacturing, and provide us with electricity.

Answer 2

Answer:

$commercially \: we \: used \: - - \\ wood)\: coal) \: biogas) \: cow \: dung) \: etc.$

Explanation:

$because \: they \: have \: high \: calorific \: value$