WHY do humans/animals need photosynthesis?

We need the process of photosynthesis to occur because it is the way in which plants produce food. Due to these plants producing food, us mammals are able to get the proper nutrition we need by consuming these food the plants produce.

"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."

protistas excret ethanol used in the manufacture of vinegar