Question

Please answer this fast don't answer if u don't know

Answer 1

Answer:

• because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.
• valves are present to prevent backward flow of the blood
• to prevent mixing of oxygen rich blood with deoxignated
• The four-chambered heart has a distinct advantage over simpler structures: It allows us to send our "dirty" blood to the cleaners-the lungs-and our "clean" blood to the rest of the body without having to mix the two. That system is very efficient.

Explanation:

hope it helps plz mark as brainlist