ELi5: How do some animals get enough nutrients out of eating hay or grass or a single variety of leaf for their entire lives?
In: 293
Beside what everyone is saying, there are plenty of minerals in grass. Plants get them from the soil, but those minerals aren’t really absorbed well, so that’s another reason why these animals need to eat a lot to get enough minerals. Many mammals are also able to synthesize vitamins that we humans can’t (that’s why we need to get them from our diet) or they have gut bacteria that do it for them.
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