The ultimate source of the energy in fossil fuels is
A)the sun
B)the Earth's internal heat
C)the energy of the plants and animals from which the fuel is formed
D)biomass

Question

Quizplus · Accepted Answer

Fossil fuels are formed from the remains of ancient plants and animals that lived millions of years ago. These organisms captured energy from the sun through photosynthesis, converting it into organic matter. When they died, this organic matter was buried and, over millions of years, transformed into coal, oil, and natural gas under the pressure and heat of the Earth's crust. Thus, the ultimate source of the energy in fossil fuels is the sun.

The Ultimate Source of the Energy in Fossil Fuels Is