(D)an atom can join with other kinds of atoms.
Basically he explained what a molecule is.
Answer:
false ig because animal cell is not complex(i am not sure)
Energy is the capacity of a physical system to perform work. Energy exists in several forms such as heat , kinetic or mechanical energy, light, potential energy , electrical, or other forms. Energy is the ability to do work. Energy sources could be classified as Renewable and Non-renewable.
D. 9PM is what i would think it to be