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.
Rating Newest Oldest. Best Answer: One of the residents to deliver a healthy baby boy last year was Dr. August. Her pregnancy is also of note because it was the longest recorded human gestation on record. Dr. August was pregnant for a staggering 17 months 11 days. This will be noted in the next edition of the Guinness Book of Workl Records.