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The structure that connects a developing embryo to the placenta and that has blood vessels for the exchange of food, wastes, oxygen, and carbon dioxide with the morther.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
A mammal that reproduces by laying eggs.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
A mammal whose young develop in a pouch.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
Not able to maintain a constant body temperature by internal means; cold-blooded.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
An organism that eats other animals.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
Able to maintain a constant body temperature by internal means; warm-blooded.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
A period of slowed life processes that permits certain animals to survive hot, dry weather.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
Food material stored in an egg to nourish the embryo.
yolk
ectothermic
marsupial
monotreme
carnivore
umbilical cord
endothermic
estivation
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