Answer:
compound
Explanation:
a compound is a substance that has been formed by two or more elements .
“His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.”
Phospholipids make up parts of the cell membrane and their in a whole different setting .