paragraph on human body
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The adult body is made up of: 100 trillion cells, 206 bones, 600 muscles, and 22 internal organs. Every square inch of the human body has about 19 million skin cells. Every hour about 1 billion cells in the human body must be replaced. The average human head has about 100,000 hairs.
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The adult body is made up of: 100 trillion cells, 206 bones, 600 muscles, and 22 internal organs. Every square inch of the human body has about 19 million skin cells. Every hour about 1 billion cells in the human body must be replaced. The average human head has about 100,000 hairs.
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