1. Petroleum
Petroleum is a fuel that is often called "crude oil" or "oil." ... Much of our oil comes from Canada and Mexico. ... The typical oil well is about one mile deep. The oil is pumped through a pipe to the surface. It is then sent to an oil refinery (a factory that cleans and processes the oil). ...
- Word Count: 297
- Approx Pages: 1
- Grade Level: High School