Oil reserves disadvantages and risks?

As canadian oil reserves are consumed, we may have to start using oil from the tar sands, the Artic, and off shore under the oceans. What do you see as some of the disadvantages and risks of developing and using these sources?


Question from my Chemistry book!Oil reserves disadvantages and risks?
The big problem is that we're already tapping most of the ';easy'; sources of oil. Some of our current oil fields may be depleted within the next 20 years.





Drilling in the arctic, for example, has the problems of:


a) getting laborers there


b) keeping the workers safe in the hostile [cold] environment


c) likelihood of degradation of the environment in the vicinity, disrupting the lives of the arctic animals


d) likelihood of a large ocean spill of crude oil, and the attendant clean-up costs





You can apply most of the above to drilling offshore, and add in the cost of decommissioning the oil rig after depletion of the field, the likelihood of drilling ';accidents'; letting oil leak, and the tremendous dangers of accidental fire on the rig to the workers.





Tar sands, oil shales, and the like - again, mining for these would have an attendant cost to the environment. There's also an extra cost in extracting useful oil from these deposits - it requires energy. Some of these deposits are high in sulfur, and so there'd be additional air pollution associated with the end use of the fuel products made from these sources.





* I am making all this up, but it sounds plausible enough so that, if I were in class, I'd sure use this answer.Oil reserves disadvantages and risks?
I would like to offer Canada an inexhaustible oil reserve, the one on my face! My face is so oily it can supply all the needs of Canada and America for the next thirty years! I offered it to America, but the nice men in the white coats came and took me away. That is why I am one of the few people who know where ';away'; is. I escaped though.
345y

revlon