1) We should use tar sands to extract oil because it has a higher EROI.
2) A similarity is the use of heat. Heat is used to form crude oil in oil shale. Heat is used to get the oil from the tar sands.
3) A key difference is that with oil shale, heat is needed to change the substances into something else to use it. With tar sands, the heat does not change any substances, but only helps extract the oil.
4) The author believes this because when oil with a low EROI is drilled, there isn't as much gained and we don't have as much to use. Because of this, we end up buying foreign oil to make up for what we don't have. Lots of foreign oil isn't as clean, so when it's burned more greenhouse gases are released.
5) I always do my easy homework first because I don't want to do the hard stuff
So did you do this homework first?
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