Question

Modern humans obtain most of our energy for heat and machines from ________.

A.
fossil fuels
B.
nuclear power
C.
solar power
D.
geothermal sources

Answer 1

A. fossil fuels

Step-by-step explanation:

Answer 2

A. Fossil Fuels

Step-by-step explanation:

Most of the human energy uses are fulfilled by fossil fuels. Almost 80.2 % of the energy is obtained from fossil fuels.