Asked by June
                I do not fully understand this question...
But just out of experience would you say that plants vary a little or a lot in their efficiency at producing joules for human consumption. And could you suggest reasons for the variation?
            
            
        But just out of experience would you say that plants vary a little or a lot in their efficiency at producing joules for human consumption. And could you suggest reasons for the variation?
Answers
                    Answered by
            Ms. Sue
            
    This site may help you.
http://www.energyquest.ca.gov/story/chapter01.html
    
http://www.energyquest.ca.gov/story/chapter01.html
                    Answered by
            bobpursley
            
    Hmmmm.  Some plants produce a lot of cellulose, and humans cant digest any of that.   Plants produce oils, sugars, and some protein, and humans can digest those.
    
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