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Personal Response:

Sustainability doesn't just mean green-- if we stop using non-renewable energy we would have to cut down more forests and rainforests to grow crops for renewable energy (such as palm oil). I am not sure how you feel about the destruction of rainforests for palm oil when it is being used as fuel when we could be using it as a source of food... The planet can survive without people however can we survive without the planet? I haven't heard of anyone living on the moon yet. So, I guess the question is how we can use these energy resources in a more sustainable way without destroying the earth and starving more people... 


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