Science Unit 3

All mammal are vertebrates, which means they have....

• Wings

• Lungs

• Hair

• Backbone

Almost all mammals are viviparous

• True

• False

All mammals breathe with their....

• Gills

• Lungs

• Skin

Mammals have ........ to keep them warm

• Fur

• Hair

• Both of them

• Fur or hair

Birds are viviparous

• True

• False

Birds eat with their....

• Mouth

• Beak

• Feathers

• Lung

Birds can be....

• Carnivores

• Herbivores

• Omnivores

• All of them

Birds use their ....... to fly

• Feathers

• Wings

• Lungs

• Beak

Most of reptiles are....

• viviparous

• oviparous

Reptiles breathe with their gills

• True

• False