Fossil fuels - SlideShare
May 18, 2010· Formed more than 300 million years ago.
Scientists say that tiny diatoms (diatoms- sea creatures the size of a pin head and can convert sunlight directly into stored energy) are the source of oil.
Oil has been used for more than 5,000-6,000 years.
Is produced in;Russia, Saudi Arabia, United States, Iran, and China