Question

question 8 of 10
which of these is not a fossil fuel?

a. gas

b. biodiesel

c. diesel

d. coal

Explanation:

Fossil fuels (like gas, diesel, coal) are formed from ancient organic matter over millions of years. Biodiesel is derived from renewable biological sources (e.g., plant oils, animal fats), so it is not a fossil fuel.

Answer:

B. Biodiesel