What are the six reasons a bone must be continually remodeled

Below are the 6 reasons a bone must be continually remodeled:

1. new cancellous bone must be remodeled into compact bone tissue.

2. bones increase and decrease in mass based on the stress they experience.

3. reshape the bone.

4. rapair the bone.

5. remodeled to replace worn collagen and hydroxyapatite.

6. regualate calcium levels in the blood.