Fact 1: Shelter is used for protection by animals against weather.

Fact 2: Many animals use sponges for shelter.

Given the two facts above, answer the question "What can animals use for protection?" with the following options: 
- hair
 - bushes
 - keratin
 - food
 - shells
 - appendages
 - energy
 - sponges


 

        sponges 