Body System

To my followers,
 In class this week, our proffesor wanted us to research one of the seven organ systems. I researched the excretory system. The excretory system is a passive biological system that removes excess, unnecessary materials from an organism, so as to help maintain homeostasis within the organism and prevent damage to the body.  When we sweat, urinate, and even bleed sometimes, we are using our excretory system.