B. A mineral is a building block of rocks.
Answer:D. It is orbited by Charon
Explanation:
Lactase breaks down the lactose in milk into smaller sugars, including glucose, which are then absorbed into the bloodstream. So the increase in blood glucose levels after drinking milk probably indicates the presence of lactase.
Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.