The right side of the heart forces blood to flow
A. to the body.
B. to the lungs.
C. through the systemic circulation.
D. both to the body and through the systemic circulation.
E. both to the lungs and through the systemic circulation.
Answer: B. to the lungs.
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In a population where most of the individuals have long, narrow noses, a child is born with a short, broad nose. What's the most likely evolutionary explanation for this variation?
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Which of the following is true of telomeres?
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