Fact 1: Organs of excretion make up the excretory system.

Fact 2: Excretion is a life process.

Given the two facts above, answer the question "What is part of the life process?" with the following options: 
- firefighters
 - Chemical energy
 - bacteria
 - First responders
 - police
 - Organic compounds
 - Excretory system
 - oxidation reaction


 

       Excretory system  