How do mosses contribute to returning nitrogen to the soil?
mosses fix nitrogen from the air.
mosses harbor cyanobacteria that fix nitrogen.
mosses die and return nitrogen to the soil.
mosses decompose rocks and release nitrogen.

Mosses decompose rocks and release nitrogen.

Explanation:

Mosses are very important for the functioning of life as we know it and for the nitrogen cycle in the nitrogen return stage to the soil. In addition to absorbing, like real sponges, large amounts of rainwater, keeping the soil surface moist and forming the peat used as fuel, mosses break down the rocks on which they grow, releasing nitrogen that will return to the soil.

Mosses are primitive plants that do not produce flowers, fruits and seeds and also do not produce vascular tissues. For this reason they are called avascular or non-tracheophyte plants. The absence of conductive tissue is largely responsible for the small size of these vegetables.

"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."