A cause for infection is pathogens entering the body. This is either to a disease that's being transferred from one being to another, or through toxins, wounds, and similar things. Most commonly, when fighting the infection, the body produces white blood cells to combat the infection, which in combination with medication usually defeats the infection.
Extreme desire to be abnormally thin. People with these conditions have dangerous eating habits and often resort to excessive activity to expend calories. Eating disorders that are abuse exercise are considered hyperkinetic conditions.
Answer:
you breathe in, it fills your lungs, you breathe out
Explanation: