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 short cervix means the length of your cervix (also called cervical length) is shorter than normal. You may find out that you have a short cervix during an ultrasound that you get as part of your regular prenatal care. Prenatal care is medical care you get during pregnancy.