There are many things we can do to keep our bones healthy, such as eating a diet rich in calcium and vitamin D, exercising regularly, and avoiding smoking.
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15
There are two main types of bones: compact bone and spongy bone.
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The strongest bone in the human body is the femur, or thighbone.
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Not all animals have a spinal cord.
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Sharks are constantly losing teeth. Unlike humans with permanent teeth, sharks have rows of replacement teeth that move forward as the front teeth wear down or fall out.
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Our bones can store minerals, such as calcium and phosphorus, and release them back into the bloodstream when needed.
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gift
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15
Children should drink cow's milk to strengthen their bones.
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Once a bone is broken, it will never be as strong as it was before.
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Babies are born with around 300 bones. Many of these bones fuse together as a child grows, which is why adults have fewer bones.
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Bones can be broken by a fall, a blow, or other trauma.
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shark
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Bones contain calcium, phosphorus, and other minerals that make them strong and hard.
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The skeletal system works with the muscular system to allow us to move.
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Bones are constantly being remodeled. Even though they seem solid, bones are actually living tissues that are continuously breaking down and rebuilding themselves.