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 that easily absorbs substances from the environment?" with the following options: 
- ferns
 - a fish
 - humans
 - animals
 - scales
 - bats
 - skin cells
 - frogs


 

        frogs 