I think it would be penicillin as it saved many lives in its time and ours.
Answer:
heat and pressure
Explanation:
because it happens under heat and pressure.
Answer:
Element Element Number Number of Electrons in each Level
Chlorine 17 7
Argon 18 8
Potassium 19 8
Calcium
A. The atom has 3 protons, 3 electrons, and 4 neutrons.
