Petroleum
Petroleum explained in an easy to understand way:
Imagine you have a favorite chocolate cake that you can only enjoy once because there's just one slice left. Similarly, petroleum is like that last slice of cake; it's a finite resource that we've been consuming over millions of years. Just as you can't bake another cake without more ingredients, we can't renew petroleum once it's used up, highlighting its nonrenewable nature and preciousness.
Practice Version
Petroleum: A black liquid fossil fuel that is nonrenewable. Petroleum. It is a natural substance formed from ancient microorganisms that is used to produce energy and various products.