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

Fact 2: Some substances are harmful to the body and block biological systems.

Given the two facts above, answer the question "What can amphibians permeable skin do?" with the following options: 
- Display wealth
 - Make money
 - resistance
 - Help them fly
 - Vibrates
 - Harm them
 - It expands
 - Damages them


 

      Harm them   