All fossil fuels received their energy from :

What three things are needed for a plant to produce food by the process of photosynthesis ?

A green substance in the leaf of a plant that allows photosynthesis to occur is called :

How long ago were most fossil fuels on Earth created ?

Under what conditions did today's coal deposits form under :

The correct order for the development of coal - from lowest form to most complex form is :

The hardest, best burning and least polluting form of coal is :

Earth's reserves of oil and natural gas were formed primarily from :

Coal is taken from the ground by _______________ , while oil is extracted by a process called __________________ .

The tower needed to hoist the pipe needed for drilling into the Earth is called the :

A method of extracting natural gas from deep underground by injecting fluid into cracks in rock is called :

What type of coal is found in Eastern PA ?

The state of Pennsylvania has oil.

A wide band of rock which has made PA one of the leading producers of natural gas in the world is called the

Which fossil fuel do we have the most of (a 300 year supply) ?