Multiple choice general knowledge

which is hardest element found in body?

  1. bones

  2. ceratin

  3. enamel

  4. cartilage
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tooth enamel is the hardest substance in the human body, ranking 5 on the Mohs scale of mineral hardness. Bones are hard but not as hard as enamel. Cartilage is soft connective tissue. Keratin makes up hair and nails - durable but not as hard as enamel.

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