1. Earth’s Early Warning System
Amphibians
Earth’s Early Warning System

2. Brief Biology Amphibians are metamorphic.
Amphibians rely on water to reproduce.
Amphibians are cold-blooded
They breathe through their skin when the lack lungs

3. Chemical Pollution Amphibians absorb oxygen through their skin.
Their skin is permeable.
They are very sensitive to contaminants.
Most reactions to chemicals are obvious.

4. Air Pollution
Being ectothermic, temperature changes can be detrimental.
UV Radiation may slow the development and increase the mortality rate of amphibian eggs.