classify - to sort things into groups according to their characteristics, backbone - row of connected bones down the middle of the back, vertebrates - animals that have backbones, invertebrates - animals without backbones, fish - live in water, have gills, most lay eggs in water, amphibians - live part of life in water and part on land, reptiles - breathe with lungs, have scales or plates, most lay eggs on land, birds - have feathers, beak, two feet, two wings, mammals - have hair or fur, breathe with lungs, live birth drinks milk,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?