500
Describe how fossil fuels are made using the terms, "sediment", "time", "heat", "pressure", and "decay".
What is...Animals/plants die. As they become part of the sediment, they decay. More layers of sediment cover them over very long periods of time. Over those millions of years, intense heat and pressure change the once organic matter into a fossil fuel, able to be used for fuel. A nonrenewable resource!