Fact 1: Amphibians have permeable skin that easily absorbs substances from the environment.

Fact 2: All frogs are amphibians.

Given the two facts above, answer the question "What has permeable skin?" with the following options: 
- goats
 - alligators
 - animals
 - apples
 - frogs
 - sharks
 - humans
 - snakes


 

     frogs    