The events in the ovarian and uterine cycles are largely controlled by the pituitary gonadotropins and ovarian hormones. before ovulation are the follicular phase of the ovarian cycle and the menstrual and proliferative phases of the uterine cycle. after ovulation are the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. how do hormone levels change with the phases and ovulation?

Explanation:

Menstruation is the cyclic changes taking place in women every month which involves the sloughing of the uterine walls.

The menstrual cycle involves the coordination of two-cycle: the ovarian cycle and the uterine cycle.

The menstrual cycle is controlled by the gonadotrophin hormones which are the Luteinizing hormone (LH) and the Follicular stimulating hormone (FSH) and ovarian hormones which are: progesterone and estradiol.

The level of these hormones during each phase are:

1. Follicular phase / proliferative phases- Estradiol level increases/ FSH level declines

2. Ovulation- LH hormone level at the peak, estrogen level at the peak

3. Luteal phase/ secretory phase- Progesterone and estrogen level elevates / LH and FSH level declines

answer; /// i believe that the correct answer is (50%);

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.