These pearly whites are almost as hard as rocks!
1) The amount of carbon in the human body is enough to fill about 9,000 lead pencils;
2) The human body has less muscles in it than a caterpillar;
3) Human teeth are almost as hard as rocks!
These pearly whites are almost as hard as rocks!
1) The amount of carbon in the human body is enough to fill about 9,000 lead pencils;
2) The human body has less muscles in it than a caterpillar;
3) Human teeth are almost as hard as rocks!