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What is made of cells, blood, calcium carbonate, and calcium phosphate?

  1. Cartilage

  2. Hair

  3. Nails

  4. Bones

The correct answer is: Cartilage

A Cartilage - While cartilage has cells and calcium carbonate, it does not contain blood or calcium phosphate. It is a type of connective tissue found in joints, the ear, and nose. B: Hair - Hair is made up of protein and does not contain cells, blood, or calcium. C: Nails - Nails do contain cells but do not contain blood or calcium. Nails are made of keratin, a protein, and grow from the nail root. D: Bones - This is the correct answer, as bones contain all four items listed. Bone tissue has different types of cells, blood vessels, and is made up of calcium carbonate and calcium phosphate, which gives it strength and rigidity. This combination allows bones to provide structure and support for the body while also being able to heal and regenerate when injured.