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Can you tell me about the microevolution of sparrows adapting and changing sizes in the North and South due to weather conditions?

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Asked by sammyj Wednesday Mar 2nd 2011 in Homework Help
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Sparrows have been in North America since the mid 1800ís. Throughout this time they have evolved their characteristics based on where they live. In the North, the birds appear to have a larger body than those in the South. Most likely this is due to temperatures. Larger birds can survive colder weather than the smaller ones.

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