A) the exchange of gases throughout the body
Because, when an infection exist in the human body it tends to spread, so if the cells stayed in one space then the infection would have a much greater opportunity to severly make that person very ill before the cells could even get to the infection.
HIV: the virus that causes aids. Anorexia: an eating disorder characterized by food restriction and fear of weight gain. Bulimia: an eating disorder characterized by regurgitation
Answer:
Child Labor Law is the correct answer.
Explain:
