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.
All About the Cervix. Pregnancy brings this tiny organ to the forefront of our minds, as the cervix softens, lengthens, elongates, dilates, thins, and does all sorts of interesting things. So just what is the cervix and exactly what is its role in pregnancy?