The skeletal system stores most of the body's calcium. The skeletal system includes bones and teeth. Small portions of calcium are stored inside blood and muscles, yet they aren't <em>used </em>to store calcium. This means that the answer is C. Skeletal system.
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Option D would be that answer
Answer:
B
Explanation:
This answer is the only one with something to do with geographical features.
I think the answer might be A or B. Not so sure...
