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12 Cards in this Set

  • Front
  • Back
strong, lightweight, gives color and streamlined shape
countour feathers
vertebrate with 2 legs, 2 wings, bill and beak
birds
endotherms, have hair, produce milk
mammals
soft, fluffy, provide an insulating layer
down feathers
mammals that lay eggs
tough, leathery skin
monotremes
mammals that give birth to immature offspring, carry in pouch
marsupials
mammals whose embroys develop inside the uterus of a female
placental
mammals that eat only animals
carnivores
mammals that eat only plants
herbivores
mammals that eat both animals and plants
omnivores
a rod of stiffened tissue
notochord
change of body form
metamarposis