Question 3
2 pts
Fossil fuels such as natural gas and petroleum contain carbon. How did the carbon get into the fossil fuels?
o it seeped out of coal buried near the fossil fuel deposits underground
o it was once part of the organisms from which the fossil fuels formed
o it was in the air that trapped underground when the fossil fuels formed
o it migrated into them from the rocks in which the fossil fuels are found
Question 4
2 pts