Answer:
There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. Sedimentary rocks are formed from pieces of other existing rock or organic material.
source:
https://nationalgeographic.com
Explanation:
The ansewer is a surgent and a medical assistant
Because the body is growing and can fix stuff faster, unlike adults where the body isn't growing as fast like children. At least that's what i think it is