Fact 1: Mammals have a layer of fat under the skin to help insulate the body.

Fact 2: All whales are mammals.

Given the two facts above, answer the question "what have a layer of fat under the skin to help insulate the body?" with the following options: 
- animals
 - dermis
 - humans
 - bears
 - whales
 - goats
 - insects
 - h2o


 

     whales    