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i think it is the kidney
Enamel is the hardest substance in the human body.
The hardest substance in the human body is tooth enamel.The enamel that coats your teeth is the hardest substance in the human body.enamel of your teeth?
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
calcium
The enamel of the teeth.
The LIVER makes new substances for your body
The Liver
liver
The skeleton. == Tooth enamel - the hardest substance the body makes.
i think it is the kidney
diamond is the hardest and graphite is the softest
Enamel, it is the hardest substance in the human body.
CARBON
Enamal is tha hardest part of human body..
Enamel is the hardest substance in the human body.
The liver makes new substances