Several
One.
many
Amphibians can live on land and in water.
The animals which live both on land as well as in water are called Amphibians.
Do you mean how many species, because I don't think anyone can organize a census to ask all the adult amphibians how many children they have.
Japanese amphibians
Amphibians are egg layers.
Amphibians live everywhere except in permanent deserts and the poles.
Amphibians can live in both land and sea.
Reptiles live on dry land; amphibians live on land as well as in water.
some amphibians live in the water for shelter and some could live on land too.
No