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Due to system maintenance, CK-12 will be unavailable on Friday,8/19/2016 from 6:00p.m to 10:00p.m. PT.

Skeletal System Problems and Diseases

Fractures are the most common bone injury but nutrient deficiency and old age can also lead to bone problems.

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Lesson 4: Bone Density
Community Contributed
This lesson is part of a unit called Give Your Bones a break. All extra instructions and handouts are provided as links in blue. It has six bone density activities, an introduction, objectives and web resources.
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