Question

3.
Our hair and nails contain
(a) calcium
(c) fluorine
(b) phosphorus
(d) proteins
​

Answer 1

Answer:

protien

hope it will help you

Answer 2

Our 'hair and nails' contain Proteins.

Answer - Proteins (Option D)

Explanation:

• Nails and hairs of one's body is made up of follicles and matrix or we can say this is the base of growth of Nails and hairs.
• They are made up of a kind of protein that is present in both of them that is hair and nail and the protein is termed as keratin.
• The lack of this protein might make the hair dull and easily breakable while the nails become brittle.