Which statement about the heart and circulation is false Aerobic fitness training raises the risk of heart disease. b. The hemoglobin on red cells, uses iron to carry oxygen and the healthy diet must include sufficient iron to avoid anemia .

What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b.transporting lymph to the tissues and creating lymph fluids c.removing infectious agents and making white blood cells d.making red blood cells and removing infectious agents