Birds (class Aves) are a group of endothermic vertebrates, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton by Ball-E
| Upload Date | 9/30/2015, 7:49:03 AM |
| Authors | Anonymous |
| Hash | 36UYHQZHJYRBHIUS4IKR1GZW2WD3YA1KH49PIYPPRHKMVFW2KG |
| Tags | U-M Transfer |
-- Original U-M ID: 15639 -- No description
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