Where should you position a conscious choking infant's head?

Which best describes carbon dioxide’s path out of the body

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

How can an organ, such as the lungs, work for multiple body systems?