Percentage<span> is a number or ratio expressed as a fraction of </span>100. 100 % is equal to 100 from 100, and means complete, entire, whole. So, if there are <span>16 patients on a hospital wing, </span>100% represents 16 number of patients (all of them).
Most veins carry deoxygenated blood from the body back to the heart.
Answer:
Cause they increase the surface area of the intestines, increasing diffusion/absorption of the digested matter into the bloodstream to be used around the body.
