Which of the following features is NOT a characteristic used to distinguish birds?
A)feathers
B)air sacs
C)variable body temperature
D)hard-shelled egg
E)four-chambered heart

Question

Quizplus · Accepted Answer

Birds are endothermic, meaning they are able to regulate their body temperature internally. This is a distinguishing characteristic of birds compared to other animals.

Which of the Following Features Is NOT a Characteristic Used