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Michael had to write a paper on the formation of red blood cells. In addition to the circulatory system, what other body system should he research? a.Skeletal system c. Endocrine system b.Immune system
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34 votes
34 votes
Michael had to write a paper on the formation of red blood cells. In addition to the circulatory system, what other body system should he research?

a.Skeletal system
c. Endocrine system
b.Immune system
d. Muscular system

User TimHorton
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2 Answers

28 votes
28 votes
The correct answer is d
User Ali Tourani
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3.4k points
16 votes
16 votes
The answer is D- muscular system
User Fqdn
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