sweat glands are widely distributed across the body surface, glands are located wherever hair follicles exist, and sweat glands are found only in a few areas.

eccrine glands, sebaceous glands , apocrine glands

Explanation:

Eccrine sweat glands are located on all over the body and secret water and electrolyte to regulate body temperature and excretion of waste substances too.

Sebaceous glands are located at the place where hair is present except the palms of the hands and soles of the feet.

Apocrine glands are located in armpits, the groin, and around the nipples of the breast the sweat releases from the apocrine have some odor too.

b) the inside picture would look at a very high temperature in a very low ph