Video 9-27

Watch on Youtube here:Video 9-27 via Dr. Avi Weisfogel’ Youtube Channel

Originally posted on https://aviweisfogel1.wordpress.com/2019/12/21/video-9-27/

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Author: Ron Ramirez

Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

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