Answer:
1. There are two, the scapula and the clavicle.
2. Pepsin, rennin, gastric lipase.
3. 22 bones. (8 cranial and 14 facial bones.)
4. Cardiac muscle.
Explanation:
It would be D. An Essential nutrient
they must eat. food=energy
D is the answer
I had to do a test on it :)
