The cardiovascular system, which transports blood through the body, is a one-way system.

During exercise, the oxygen concentration in the blood increases to twice that of resting levels. t or f

Which step would a state health department most likely take to reduce lead exposure? promote health-planning operations to limit lead exposure at home.evaluate the number of countries affected by lead exposure.create general national guidelines for working with lead.carry out research on the worldwide effects of lead products.

Fats are the most concentrated form of