Question

comment on two of the following: a)fixed motion b)villi​

Answer 1

Answer:

sorry I didn't get your question

Answer 2

Answer:

a)Rotation around a fixed axis is a special case of rotational motion. The fixed-axis hypothesis excludes the possibility of an axis changing its orientation and cannot describe such phenomena as wobbling or precession.

b)By. Intestinal villi are tiny, finger-like projections made up of cells that line the entire length of your small intestine. Your villi (villus is the singular, villi is the plural) absorb nutrients from the food you eat and then shuttle those nutrients into your bloodstream so they can travel where they're needed.