The purpose of the villi is to <span>increase the internal surface area of the </span>intestinal<span> walls making available a greater surface area for absorption, i will attach a picture of the villi for the structure part of this question </span>
Answer:
Uracil
Explanation:
All of the other bases are used only in DNA
<span> nucleus () of an atom along with positively charged particles called </span>protons<span>.</span>
True. feces, also known as excrement are the product of excretion.