Amphibian lungs do not have to be as efficient as gills because there is much more oxygen in air than in water.
When an amphibian is a larva, it will have gills. As it matures into the adult stage, it will develop lungs.
A amphibian has neither lungs or gills
Most amphibians grow out of their gills before adulthood.
Frogs and toads have gills as tadpoles, and lungs as adults.
Gills are more efficient at obtaining oxygen, but there is much more oxygen in air to breath through the lungs.
gills, lungs, and permeable skin
They have four: Gills, lungs, tongue, and skin.
lung, skin and gills. by dinesh singh bhadouria
They grow lungs, and lose their gills.
Amphibians, such as frogs and salamanders, begin life with gills for underwater breathing and later develop lungs to breathe on land as they mature. This transition from gills to lungs is part of their metamorphosis process.
In the early stages of development, amphibians live in the water they breathe with gills as an adult an amphibian lives on land and uses lungs to breathe.
Gills, because lungs help it live on land.