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  • 25-04-2024
  • Biology
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Which of the following characteristics among extant species are unique to birds?
a. Feathers
b. Hollow bones
c. Amniotic eggs
d. Endothermy

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noonf07
noonf07 noonf07
  • 25-04-2024
a. Feathers because feathers are modified scales and are not found in other vertebrates
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