What Limits Exist?

Have you ever wondered why we can't just have an endless supply of fuel for cars? One of the biggest limits is that crude oil is a non-renewable resource. Imagine oil is like a big box of crayons that can run out—we can't create more crayons when they’re all gone. It takes millions of years for crude oil to form underground, which means we have to be careful about how we use it. Another limitation is the environmental impact when oil is extracted and processed; it can cause harm to our planet's air and water. Refineries, where crude oil turns into fuel, are like kitchens that sometimes produce a little extra smoke while cooking, and pollution is something everyone wants to keep low. So, we have to think about how we can use oil efficiently without upsetting the Earth too much.