Select your answer:
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Heart Anatomy › ViewWhich heart chamber is more muscular and why?
A. The left ventricle requires more muscle because it must pump more blood than the right ventricle
B. The right ventricle requires more muscle because it must pump more blood than the left ventricle
C. The left ventricle requires more muscle because it must keep blood in the aorta at a high pressure
D. The right ventricle requires more muscle because it must keep blood entering the lungs at higher pressure than blood entering the aorta
Integumentary System › View
Ultraviolet radiation can damage the DNA in skin cells, causing those cells to grow and divide uncontrollably. this is called
A. a mole
B. sun burn
C. skin cancer