The hardest thing present in human body is ______?

انسانی جسم میں موجود سب سے مشکل چیز ______ ہے؟

Skull bones

Dental enemal

Ribs

Femur

Tooth enamel is the white, visible part of the tooth and it is also the hardest part of the human body.

The main mineral composition is hydroxyapatite, a crystalline of calcium phosphate.