science 1 question

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?

asked by SkatingDJ
  1. It's D:)

    posted by SkatingDJ
  2. Yes, D.

    posted by DrBob222
  3. I don't know either SkatingDJ

    posted by Desiree
  4. lol

    posted by Hacker

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