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.
The uterus is located in the lower abdomen between the bladder and the rectum. The uterus is also called the womb. It is pear-shaped, and the lower, narrow end of the uterus is the cervix. When a woman is pregnant, the baby grows in the uterus until he or she is born.