Question

What form of pollution, if any, does each energy source cause?
How does the economy influence energy source choices?
How does location influence energy source choices?

Answer 1

You haven't given which energy sources the question is referring to, but common forms of pollution from energy sources such as coal, oil, nuclear power, biofuel, wind, water, solar, etc) can definitely be Google-ed.

2) The economy is related to money. How is money related to energy sources?

3) Location would affect what resources are available. How would this affect energy source choices?

Hope this helps.