Mixing chemicals with waste in sewage holding tanks or septic. systems may produce toxic fumes, corrode pipelines and tanks, and. pollute soil and ground water when discharged. When chemicals, such as formaldehyde, are added to septic systems, they can cause. bacteria in the system to die.
The cervix is the opening to the womb. Itâs located between the vagina and the uterus and plays a crucial role in pregnancy and labor. During pregnancy, it remains closed and the opening is blocked with a mucus plug.
A number of premature births take place because of a painless stretching of the cervix. A long cervix during pregnancy could be caused by traumatic circumstances that have had their effect on the cervix at an earlier time. Medical procedures, such as a dilatation and curettage are responsible for affecting the cervix.