Fact 1: Most amphibians breathe with gills as larvae and with lungs as adults.

Fact 2: Frogs are amphibians, iguanas and snakes are reptiles.

Given the two facts above, answer the question "what breathe with gills as larvae and lungs as adults?" with the following options: 
- fish
 - snakes
 - frogs
 - salmon
 - breathe
 - bats
 - lungs
 - animals


 

   frogs      