Answer:With this system, blood always flows in only one direction inside the heart. There are also valves at the bottom of the large arteries that carry blood away from the heart: the aorta and the pulmonary artery. These valves keep the blood from flowing backward into the heart once it has been pumped out.
Explanation:
B Osteoporosis, it’s chronic and you’re born with it so it’s not preventable
Huh What is this question bc I’m confused
Benetton with an accident is where you get injured
Ambivalence refers to the state of having mixed feelings or contradictory ideas about something or someone