Coal, oil, natural gas and propane are fossil fuels, They are called fossil fuels because:
What is Geothermal Energy?
The United States is rich in natural resources. Name 2 reasons that we choose to import materials rather than use what we have?
As the cost for oil increases the demand will _________.
What is a renewable resource?
Which of the following are considered non-renewable resources? Select all that apply.
When do "renewable" resources become "non-renewable"?
Name 3 alternative energy sources.
What is one reason why gold mining is continuing in the Yukon Territory even though it is hard to find and extract the gold from the ground?