Most amphibians breathe with gills as larvae and with lungs as adults, and all frogs are amphibians. Given these facts, an example of organisms that breathes with gills as larvae and with lungs as adults are among the following options:
- mollusk
 - salmon
 - a fish
 - harmful
 - reptile
 - amoeba
 - frogs
 - arachnid


 

       frogs  