Multiple choice

These animals begin in water and breathe with gills. As adults, they breathe with lungs.

  1. Amphibians

  2. Fish

  3. Mammal

  4. Reptile

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Amphibians are ectothermic vertebrates that typically undergo metamorphosis, starting life in water with gills and transitioning to land with lungs as adults.