Thus, it has been suggested that HIV evolv ed from viruses that originally infected monkeys in Africa and was somehow transmitted to people. Scientists debate HIV infection became widespread after significant kindly changes took place in Africa during the 1960s and 1970s. Large numbers of people go from rural areas to cities, resulting in crowding, unemployment, and prostitution. These conditions brought about an increase in cases of sexu...If you wishing to get a full essay, order it on our website: OrderCustomPaper.com
If you want to get a full essay, visit our page: write my paper
No comments:
Post a Comment