Smarty Pants Quiz
09
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00
Half of all mammal species are what?
Vertebrates
Invertebrates
Apex predators
Rodents
Almost... Try again!
Rodentia is an order of mammals also known as rodents, characterised by two continuously-growing teeth in the upper and lower jaws which must be kept short by gnawing.
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09
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00
Half of all mammal species are what?
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