Which is a fossil fuel?
ozone
coal
uranium
wood

coal is the correct answer.

Explanation:

Fossil fuels are formed by a natural process, decayed animals and plants are converted into fossil fuels by the exposure heat and pressure within the earth's crust.

Types of fossil : coal, natural gas, and petroleum.

Coal is the nonrenewable resource since its formation occurs in millions of years

coal is fossil fuel because it is formed from the fossilized decay of plants and animals, contain carbon as main and also hydrogen, oxygen, nitrogen, and sulfur.  

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls