Fish, amphibians, reptiles, birds, and mammals have similar embryos.

Question

They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians, reptiles, birds, and mammals develop lungs to breathe air.
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers, and humans have hair.

Which two animals exhibit the most linear relationship?(1 point)
Responses

birds and humans
birds and humans

amphibians and fish
amphibians and fish

birds and reptiles
birds and reptiles

amphibians and reptiles

Answer 1

birds and reptiles