Fact 1: Echinoderms lack respiratory and excretory systems.

Fact 2: Starfish and sea urchins are also echinoderms.

Given the two facts above, answer the question "What kind of animal doesn't have a respiratory or excretory system?" with the following options: 
- a fish
 - bears
 - ant
 - whale
 - humans
 - starfish
 - mammals
 - llama


 

      starfish   