PLEASE HELP ME Which of these attacks the germs in your body when you are sick? A. skin
B. lymph nodes
C. white blood cells
D. bone marrow

C. White blood cells

Explanation:

White blood cells are part of the immune system that fight pathogens such as bacteria and viruses

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

the answer to your question is tooth decay.