Fact 1: Heat and pressure change the remains of prehistoric living things into natural gas.

Fact 2: Prehistoric plants, for example, turn into light oils and gas.

Given the two facts above, answer the question "What does heat and pressures make from dead plants?" with the following options: 
- Soil
 - peat
 - Heat
 - Oil
 - moss
 - Water
 - coal
 - Gas


 

        Gas 