Fact 1: Vertebrates are animals that have a backbone.

Fact 2: Invertebrates have no vertebrae or backbone.

Given the two facts above, answer the question "What do some animals not have?" with the following options: 
- nucleus
 - fish
 - offspring
 - vertebrae
 - Chlorophyll
 - invertebrates
 - Energy
 - Energy.


 

    vertebrae     