One from the major human activities that leads for the irreversible biodiversity loss may be the overexploitation of certain animals. This occurs once the human destruction or using a species outpaces that species' ability to reproduce. This often occurs certain organisms are highly prized by humans, which could be the case with animals and plants whose parts are utilized as medicinal therapies in certain societies. Sadly, three in the Earth's eight type of tiger happen to be extinct. What's worse? The five remaining species are gravely endangered, partly due for the demand for their bones, which can be considered to treat arthritis, and erroneously believed to reverse male impotence. Exploitation also affects plants also including popular wild-grown medicines ' including Echinacea, the normal cold remedy. Sperm may be found in the "dewdrop" of the liquid that one produces when excited, but there may be sperm before he ejaculates. Can cause the nipple and areola color deepened. 2, Some physiological changes may also lead to modifications in large from the nipple. Pregnancy generated increased estrogen and progesterone. Women after pregnancy, Starting from early pregnancy, the nipple and areola color deepened, by turns crimson through the light brown. Some women (under 3 decades old -45 years of age), the situation even without the pregnancy. Nipple and areola color deepened slowly. This color change suggests women now have “one off"with the increased estrogen.