Pronghorn antelopes are well adapted for dry conditions with extremes of temperature, especially cold. as global climate change causes the area where the pronghorn live to change, not only in temperature but also in what plants grow there and what predators and prey live there, what is likely to happen to the pronghorn?

The global environment changes result in the changes in temperature and the physical factors, these changes in the physical factors causes the changes in the flora and the fauna of a given region.

In order to survive in the changing condition, the organism need to adapt in the changing environment, otherwise the organism would be dead due to lack of favourable conditions.

So, the Pronghorn would adapt to the new conditions by introducing the genetic variations.

"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.