Question

E. Answer in one word.
1. Hardest substance in human body.
2. Teeth with flat grinding surface.
3. The long tube with a large number of finger-
like projections
4. The part of stomach that temporarily stores
partially chewed food in cows.
5. Breaking down of food into simple soluble form
in the body.​

Answer 1

1. i hope bones are the hardest substance in human body.