Why are fossil fuels classified as nonrenewable resources? A. They are classified as nonrenewable because they are very difficult to extract.
B. They are nonrenewable because they take hundreds of thousands of years to form.
C. They are classified as nonrenewable because they are very scarce on Earth.
D. They are classified as nonrenewable because they provide all the energy we use.
The correct answer is B. They are nonrenewable because they take hundreds of thousands of years to form.
Explanation: Fossil fuels, which include coal, oil, and natural gas, form from the remains of ancient plants and animals over millions of years. This long formation process means that once we extract and use these resources, they cannot be quickly replenished, making them nonrenewable.