21. Which is the primary function of the skeletal system?
A. It provides rigid framework for movement.
B. It provides cells that aid in protection of the body from disease via the antibody
response.
C. It transports substances and other nutrients across the body.
D. It defends the internal environment from invading microorganisms and viruses.
A. It provides rigid framework for movement.
B. It provides cells that aid in protection of the body from disease via the antibody
response.
C. It transports substances and other nutrients across the body.
D. It defends the internal environment from invading microorganisms and viruses.
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Answer:
B
Explanation:
that's my answer.
#getRickRolled