Answer:
its the lower brainstem
Explanation:
The lowest part of the brainstem, the medulla is the most vital part of the entire brain and contains important control centers for the heart and lungs.
John Dalton
Although the concept of the atom dates back to the ideas of Democritus, the English meteorologist and chemist John Dalton formulated the first modern description of it as the fundamental building block of chemical structures.
He proposed the Law of Conservation of Matter, being the first to say that matter can not be created nor destroyed.