WONDER #1427: What Are Fossil Fuels?

Question 1 of 3

As prehistoric plants and animals died and decomposed on the bottoms of swamps and oceans, they formed layer after layer of a spongy material called what?

1. rock
2. mud
3. peat
4. sand

Question 2 of 3

Fossil fuels are rich in what element?

1. oxygen
2. nitrogen
3. phosphorous
4. carbon

Question 3 of 3

Which of the following is NOT an example of a fossil fuel?

1. coal
2. oil
3. natural gas
4. wind

Check your answers online at https://wonderopolis.org/wonder/What-Are-Fossil-Fuels.