Hair is composed of the protein keratin, which is also the primary component of finger and toe . Hair is produced from a structure called the hair . Humans develop hair follicles during development, and no new follicles are produced after birth.

Explanation:

1.  Keratin is the protein that makes up hair, skin, nails and horns in animals. It can also be found in many  internal organs and glands. Our Hair is composed of keratin protein, and it  is also the primary component of finger and toe nails.

2. Hair is produced from hair follicles. Hair follicles are develop in humans during fetal development, and there is no new follicle production after birth.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.