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10 questions
What is the other way to call the warm-blooded vertebrates?
The characteristict that is unique to birds is that they:
can fly
lay eggs
are endothermic
have feathers
Feathers are made of
keratin
wings
contour
melanin
TRUE OR FALSE
Bird´s air sacs allow its lungs to obtain fresh oxygen both when inhaling and when exhaling.
Mammals regulate their body temperature by ______ means.
internal
external
The thick hair that insulates the body of mammals is called:
Select the type of teeth that is used for tearing food.
canines
molars
premolars
incisors
Mammals that lay eggs are called:
marsupials
monotremes
chiroptera
eggs
Select the pouched mammal:
koala
cow
dog
panda
TRUE OR FALSE.
Bats are not the only flying mammals.
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