Question

The earth's (blank) is a source of fossil fuel.
trees
land
water

Answer 1

I believe its actually land

Step-by-step explanation:

Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth’s crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels- Nat Geo

Answer 2

Um well trees technically because over time, the trees would compact and turn into oil