<em>The function of the excretory system is </em><em>to remove waste from the body, or any unnecessary materials not kept by storage functions. It is important because it helps maintain homeostasis within organisms</em>
<em>Organs that this system includes are </em><em>the skin, the kidneys, the large intestines, the liver, and the lungs.</em>
The umbilical cord will stop pulsating approximately 3-5 minutes after birth.
I would say LUNGS as when you are smoking marijuana you are usually inhaling it into the lungs
Studies between the effects of marijuana on the brain are still in progress but I don’t think you will get brain cancer from smoking so I would say the lungs on this one