Which of the Following is an Excretory Waste

Question

Which of the following is an excretory waste?
A)Feces
B)Bacteria
C)Urea
D)All apply.

Accepted Answer

Feces is a waste product from the digestive system, bacteria can be a waste product from metabolic processes or from the immune system, but urea is specifically a waste product from the breakdown of proteins in the liver and is excreted by the kidneys.