: Roughly how many calories of fossil fuel energy are required to produce every calorie of food we eat?

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Roughly how many calories of fossil fuel energy are required to produce every calorie of food we eat? a) 1 b) 6 c) 10 d) 16 Submit Answer Total Votes : 946   Add this poll to your blog   Suggest A Poll   View Past Polls   Post Comments (0)   Create Your Own Poll Powered By MicroPoll

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