In 30 years, farmers will not be able to rely on groundwater water for irrigation. Groundwater usage is being depleted due to contamination, over usage and climate change. Explain how each of the following contribute to the depletion of groundwater.

"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 the answer is b.

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.