Question

11. Fossil fuels are considered nonrenewable resources because of -

a. Where they come from
b. How they are produced
c. How useful they are
d. How long they take to

Answer 1

The answer is d. How long they take to be renewed, and by that I mean they take years and years to form again.

Non- not
Renewable- replaceable

Fossil fuels take a very long time to be renewed and is not replaceable instantly, which makes it the opposite of hydroelectric power.

Hope this helps!
Good luck.