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.
Confidence votes 21.2K. The baby grows in the womb - which is another word for uterus. The pre-pregnancy uterus is fairly small, about the size of a woman's tightly clenched fist. It sits right above the vagina. The cervix - which can be felt at the top of the vagina connects the uterus and the vagina.