In a step by step format, write about the process of the blood flow as it enters the heart until it leaves the heart.

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d

During polarization, potassium has a blank charge, sodium has a blank ch arge ,and calcium has a b l ank. charge

Which of these statements describes clinical depression? a. a milder form of depression that usually follows a traumatic event b. a medical condition that may occur due to a chemical imbalance in the brain c. alternate feelings of extreme happiness and extreme sadness