What has permeable skin?
goats alligators animals apples frogs sharks humans snakes
A B C D E F G H
All frogs are amphibians.
Frogs have permeable skin that easily absorb substances in the environment.
What has permeable skin? (A) goats (B) alligators (C) animals (D) apples (E) frogs (F) sharks (G) humans (H) snakes