Animales complejos: anfibios

Amphibians are ectothermic vertebrates that breathe through both lungs and skin, which is why they thrive in moist environments. They begin life in water, often as larvae with gills, and undergo metamorphosis to develop structures for living on land. The majority of amphibians are frogs or toads.

What is metamorphosis in amphibians?

What percentage of amphibians are frogs or toads?

• 50%

• 70%

• 90%

• 100%