Answers

2016-04-19T00:28:10+05:30
No, as they contain cellulose which remains undigested due to the absence of cellulose digesting enzymes which left as a wastage.
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2016-04-19T00:30:49+05:30
No, Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the absence of cellulose-digesting enzymes.
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