Asked by SkatingDJ

In which way does the circulatory system rely on the skeletal system?
A. Glucose is secreted by compact bone as an energy source for blood.
B. Spongy bone stores minerals needed by blood cells.
C. Bones provide a source of oxygen to blood.
D. Blood cells are produced in bone marrow.

I don't know? Please help?
Answered by SkatingDJ
It's D:)
Answered by DrBob222
Yes, D.
Answered by Desiree
I don't know either SkatingDJ
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