Answer; (not correctly matched)
Apocrine gland; Thermoregulation;
Explanation;
Apocrine glands are found in the skin and the eyelids.
Most apocrine glands in the skin are in the armpits, the groin, and the area around the nipples of the breast.
They are scent glands, and their secretions usually have a odor. They empty into the hair follicle just before they open onto the skin surface.
Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier
I am thinking the rock that forms from lava that cools quickly is D) Obsidian.
The hero changes from being happy to depressed or unhappy
The endosymbiotic theory states that eukaryotic cells might have evolved from prokaryotic cells through a close realtionship.