You would find layers in a sedimentary rock, because it has different types of other rock combined in it.
Always remember quadrilateral means 4 sides
Function. There, the villi and the microvilli increase intestinal absorptive surface area approximately 30-fold and 600-fold, respectively, providing exceptionally efficient absorption ofnutrients in the lumen. There are alsoenzymes (enterocyte digestive enzyme) on the surface for digestion.
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