Ever since the car was invented in the early 1900s, fuel was needed to run it and it became a very important liquid that is needed almost on a daily basis. Throughout the years, wars have been fought for the oil rights that are located in the different countries. Many people buy oil and are concerned with having enough oil. People around the world are using oil and oil is a nonreproducable product. This means that it can’t be produced again.
We just have to find more oil. There are over a trillion barrels of oil left on Earth. That may sound like a tremendous amount of oil, but at the rate that the people on Earth are using it, it is not going to last a lot longer, maybe 50 years.