Question

which is a leading theory for the formation of fossil fuels?
a. nitrogen decayed, forming hydrocarbons.
b. carbon accumulated due to excess nitrogen levels.
c. organic matter was compressed and heated.
d. radioactivity from earths early development formed hydrocarbons.

Explanation:

Fossil fuels like coal, oil, and natural gas are formed from the remains of ancient plants and animals (organic matter). Over millions of years, this organic matter is buried under layers of sediment. The pressure (compression) and heat from the Earth's interior transform this organic material into fossil fuels.

• Option A: Nitrogen decay does not form hydrocarbons (main components of fossil fuels).
• Option B: Excess nitrogen levels are not the cause of carbon accumulation for fossil - fuel formation.
• Option D: Radioactivity from Earth's early development is not the leading theory for hydrocarbon (fossil - fuel) formation.

Answer:

C. Organic matter was compressed and heated.