Movement
They move by means of four limbs.
Support
They have inner skeletons made of bone.
Protection
Their bodies have no scales, hair, or feathers.
Circulation
Their hearts are divided into three chambers.
Respiration
They breathe with gills when they are young
and lungs when they are mature.
Reproduction
Their young develop inside jelly-coated eggs.
They hatch in water and transform to
land creatures as they mature.
-Pinegreenwoods Montessori
Montessori Zoology
