The sun reaches its highest point in the Northern sky (North of the equator) on the: A. Summer solstice
B. Winter solstice
C. Vernal Equinox
D. Autumnal Equinox

A . Summer solstice... around June 21

"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."

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.