Answer: Oxygen Concentration, Glucose Concentration, and Temperature.
Explanation: Right bro. 100%
<span>In invertebrates both nitrogenous and digestive wastes are eliminated through the anus because the anus is part of the excretory system of the body. It is the opening of the body that is at the opposite end of the mouth after the digestive tract. The anus is found at the end of the alimentary canal where solid waste materials are excreted because they are no longer needed by the body. </span>
Poop. I don't really know what you are asking but the excretory system removes the stuff from our stomach that we cant use or stuff that already has all of the nutrients that we need removed. Hope this helps