Answer:
The atom
Explanation:
The basic unit of matter is the "atom." All matter consists of millions of atoms that within the atom contains electrons, protons, and neutrons. Knowing how many electrons, protons, and neutrons a atom has can determine the element which are substances that are on the periodic table.
Hope this helps.
A) the exchange of gases throughout the body
In the situation, when Chuck thinks that attractive women will not be a good educator his attitude toward attractive women is stereotype that once a woman is beautiful she is not smart as maybe all she thinks is just her looks.