m30.    How is natural gas used?

In the US, 82% of the natural gas is used for heating and drying. Approximately 15% of natural gas is used to produce electricity; 3% is used for transportation.

e15.    What was early life like?

e16.    What do computer models of greenhouse changes show?

g06.    What are some of our energy resources?

g09.    What is the interior of the earth like?

g18.    What is energy?