Illustrating the economic importance of fossil fuels, with examples form the petroleum and petrochemical industries in Alberta; analyzing using chemical principles, the refining of hydrocarbons; and investigating careers related to the energy industry
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These questions that you are asking are going much further than I think many of us will go to help you, they are essay style questions that easily have 2 or 3 thousand words written about them.

I suggest you use resources such as wikipedia to help you answer them.