Answers

2015-06-27T22:08:45+05:30
They are cellulose...............
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2015-06-27T22:11:37+05:30
Cellulose is the answer , which is a complex carbohydrate.
Reason is because herbivores contain a pigment in their saliva which dissolve Cellulose and break it down , but Humans lack that pigment and so they cant digest it.
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