You are presented with the question "What feature allows frogs to absorb substances from the environment?" and the following answer choices: 
- four limbs
 - poison dart frog
 - hydrate their cells
 - permeable skin
 - layers of fat
 - a cuticle
 - predators
 - double eyelid

Now knowing that amphibians have permeable skin that easily absorbs substances from the environment and all frogs are amphibians, choose the best answer.


 

    permeable skin     