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

Fact 2: All internal organs are vital organs.

Given the two facts above, answer the question "A thing that is what makes up the excretory system." with the following options: 
- matter
 - vital
 - omniscient
 - external
 - toads
 - food
 - always angry
 - animals


 

  vital       