Their decomposed remains gradually changed over the years to make coal, oil and natural gas. California produces about one-half of the oil it uses. The rest comes from Alaska and other countries. Oil is transported in huge pipelines and tanker ships to places where it is made into other products. Many products, like plastic and fertilizer come from oil.
Natural gas is found near oil.
Natural gas is sent through a series of pipes until it comes to our homes, schools and businesses. Fossil fuels are not renewable. They can't be remade.