In africa, aids takes its toll on the population, but deaths occur most frequently in the 20-40 age group. show a survivorship curve that would illustrate this pattern.

its 42

i say its d?

"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."

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.