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Social Studies, 22.02.2021 19:30 alex6111
how Dr. Schneider's observations with hummingbirds demonstrate the operation, in hummingbird populations, of each of the four components of natural selection listed in the video. In this video, Dr. Schneider points out that some of the hummingbird species in his study are 2 million to 3 million years old, which he notes makes them very young species?
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