Completar frases VertebratesVersión en línea Complete these sentences about vertebrates. por Begoña Ruiz 1 eggs wet eggs scales four eggs hair live feathers wings water milk Mammals have . Baby mammals are born . They drink their mother's . Birds are oviparous , they are born from . Birds have . They have to fly . Reptiles are vertebrates . They lay and they have . Some have legs , some don't have legs and some have a shell . Amphibians have a skin . They live in the and on land . Amphibians lay in the water .