Sexual stimuli in the male results from high levels of in the female           a. progestins   b. estrogen   c. progesterone   d. testosterone  

The right answer is B. estrogen

Female sex hormones drive libido. An American team shows how hormonal fluctuations during the menstrual cycle orchestrate sexual desire. The latter reaches its maximum around ovulation, the perfect time for fertilization.

The results show that estradiol and progesterone have two opposite effects on desire: the first increases it, the other decreases it. Thus, the libido reaches its maximum around the peak of estrogen, that is to say near ovulation ... then the sexual desire decreases when the progesterone levels increase.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

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