One of the factors that increases body heat during adaptive thermogenesis is the production of by skeletal muscle. this product causes leakage of protons from the intermembrane space of the mitochondria. uncoupling protein insulin glycogen glucagon

The answer is Production of organism, it happens in all warm-blooded animals, and also in a few species of thermogenic plants for example the Eastern skunk cabbage, the Voodoo lily, and the giant water lilies of the genus Victoria, the lodgepole pine dwarf mistletoe.  To keep the temperature up through shivering has only one method, it produce heat because of the conversion of the chemical energy of ATP into kinetic energy causing almost all of the energy to show up as heat.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.