Oxygen enters the lungs, then passes through the alveoli and into the blood.
Answer by JKismyhusbandbae: stimulant.
Depressants are drugs that slow the central nervous system. Depressants are widely used and inhibit the function of the central nervous system also known as stimulant.
Its true alcohol causes bad reactions to the heart and blood reproduction and circulation
All except the fourth (one therapy for all ages).
