You are presented with the question "Adult frogs have what and breathe with gills as larvae?" and the following answer choices: 
- embryos
 - a fish
 - ovaries
 - grow
 - teeth
 - survive
 - NaCl
 - oxygen

Now knowing that most amphibians breathe with gills as larvae and with lungs as adults and an adult frog has lungs and teeth, choose the best answer.


 

     teeth    