In your own words, explain the role of scientific investigation in the development of the theory of adaptation.

The scientific theories can be framed on the basis of scientific evidence as well as their proofs.

To frame any scientific theory one has to follow the scientific procedure to reach the conclusion one of which is an investigation to provide the best evidence to support the theory.

The theory of evolution was proposed by Charles Darwin which stated that organism evolves from ancestors or descent with modifications. In favor of his theory, he presented the remnants of the past organism as well as the collected specimens form his voyage.

"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."