Answer: germ theory
Explanation: Germ theory of disease is a theory in biology. It says that small organisms (called germs), also known as microbes, cause diseases. Most, but not all diseases are infectious diseases. The germ theory states that small organisms cause a reaction in the body of those who are infected. The body's reaction to infection is called a disease.
Reference: Wikipedia
Equal and persevered transformed
The answer is B, because layers mix better at the poles.
<span>Villi increases surface area for absorption as it contains lacteal which absorbs glycogen and fatty acids. blood capillaries in villi absorbs amino acids and glucose and then send them in the liver</span>
