There are many different kinds of sewage treatment plants which vary in the process by which they treat wastewater. Generally, they can be classified into the following types of system: 1  Activated sludge plant (ASP). 2  Rotating disc system. 3  Submerged aerated filter (SAF). 4  Suspended Media Filters (SMF).
In certain species of sea life, male pregnancy is common. The male incubates and births live young instead of the female. Human males are not able to do so, and medical risks of a male pregnancy are extreme. Transgender individuals can become pregnant if reproductive organs are left intact. A common phenomenon is a sympathetic pregnancy, where a man exhibits all the symptoms of pregnancy along with his expectant partner.
Thomas Beatie, the transgender man who made headlines as the so-called pregnant man, gave birth Sunday to a healthy baby girl, ABC News has learned. The birth, at St. Charles Medical Center in Bend, Oregon, was natural, according to a source, who added that reports that Beatie had had a Caesarean section are false. She's really cute, really pretty,'' the source told ABC News Thursday afternoon.