I think it’s a, hopefully you get it right!
Answer: "Articulating" means that the bones are moving relative to each other at a joint.
Answer:
An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.
Explanation:
Substances that are made up of only one type of atom.
