Question

how does a cow absorb most of the nutrients from hard to digest food such as grass​

Answer 1

Answer:

To help the cow's body capture and absorb all these nutrients, the inside of the rumen is covered by small finger-like structures (called papillae). In Figure 2, notice that the rumen wall resembles a shag carpet or the imitation wool on the inside of a winter coat. The papillae give the rumen wall this texture.