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Thereafter, fat tissue gradually replaces the red marrow, which in adults is found only in the vertebrae, hips, breastbone, ribs, and skull and at the ends of the long bones of the arm and leg; other cancellous, or spongy, bones and the central cavities of the long bones are filled with yellow marrow.
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Communication is the answer
One major reason being that for adults heart disease which is caused by obesity is the number one cause of death in the United States
I think Hypothesis, Experiment, and Conclusion