How does the circulatory system work at the tissue level?
1.The heart pumps the blood.
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Biology, 11.12.2020 02:30 21stcenturycyber
How does the circulatory system work at the tissue level?
1.The heart pumps the blood.
2.Nutrients are delivered throughout the body.
3.Cardiac muscle contracts.
4.Blood cells carry nutrients.
I don't know which one
Answers: 3
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Three applications for admission to a local university are checked, and it is determined whether each applicant is male or female. the number of sample points in this experiment is
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