Pelvic Inflammatory Disease - Cause. Pelvic inflammatory disease (PID) is caused by bacteria entering the reproductive organs through the cervix. When the cervix is infected, bacteria from the vagina can more easily get into and infect the uterus and fallopian tubes.
AA as an academic degree stands for Associates of Arts. The difference between Associates of Arts, Associates of Science, and Associates of Applied Science: Associate degrees fall into three main areas.
Associate of Applied Science (AAS) Degree in Accounting. Given that much, if not all, of its course curriculum, can be hosted on the internet, the Associate of Applied Science (AAS) in Accounting is one of the most popular of all available online degree programs.