What is a fossil fuel?

1. A nonrenewable energy source

2. Made from non-living matter

3. A nonrenewable energy source (same as A)

4. Made from humans

1. A Nonrenewable Energy Source

Fossil fuels take millions of years to form. A non renewable energy source means a energy source that takes longer than a lifetime to form which can not be replaced, making the answer A and C / 1 and 3.

1 and 3

Once fossil fuels are used, they can’t be used again