How does the intestines
and villi absorb products
of digestions?

Explanation:

villi that line the walls of the small intestine absorb nutrients into capillaries of the circulatory system and lacteals of the lymphatic system. fatty acids absorbed from broken down chyme pass into the lacteals. digested nutrients pass into the blood vessels in the wall of the intestine through a process of diffusion

the answer is b.) hydrogen bonds between bases.

yes we can.   a lady urinates from her urethra.