Fact 1: Oil is formed by layers of sediment pushing down on decomposing algae.

Fact 2: When the algae dies it is decomposed by bacteria.

Given the two facts above, answer the question "What do the actions of sediment and bacteria create?" with the following options: 
- diamonds
 - harm
 - vegetable oil
 - soil
 - coal
 - oil
 - lake
 - bogs


 

      oil   