The answer is c because boy have the same rock layer you can use they key to help you
C. The cell took in another ancient prokaryotic cell, which began living inside it.
Skin serves as a protective barrier, a way to sense the world, and a layer that keeps nutrients and water inside the body. Four types of cells make up the skin, and they are produced mainly in the epidermis near the basement membrane.
The lungs are functioning to take carbon dioxide out of the body. Also known as exhaling.
