Give two common characteristics of class Aves and Mammals

Give two important characteristics each of classes of sub-phylum vertebrate. Write one example each class.

Enumerate general characteristics of class Aves.

Which character is not same is Aves and mammals?

Explain the important characterstics of class Aves.

Which characters is not same in aves and mammals

Which characters is not same in aves and mammals

Mention any two important characteristic features of mammals.