Birds and mammals are both endothermic, and both have four-chambe...

Question

Birds and mammals are both endothermic, and both have four-chambered hearts. Most reptiles are ectothermic and have three-chambered hearts. Why don't biologists group birds with mammals? Why do most biologists now consider birds to be reptiles?

Accepted Answer

Hello, everyone here we have a question that says from fossil records, are K. A. Terex, also known as er ville gale was the oldest known primitive bird. What was its features made them associated with dinosaurs? So the Rko Terex had that your teeth structure associate them with dinosaurs, their wing claws, their long tails and their feathers. So a B and C. Are all correct, which means our answer is D. All options are correct. Thank you for watching. Bye.

Birds and mammals are both endothermic, and both have four-chambered hearts. Most reptiles are ectothermic and have three-chambered hearts. Why don't biologists group birds with mammals? Why do most biologists now consider birds to be reptiles?

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