CheckPoint Theories of Biology

CheckPoint Theories of Biology - Darwins theory of Natural...

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Unformatted text preview: Darwins theory of Natural Selection seems to be dead on even in todays headlines. He stated in 1859 that the mechanism for the species change is called natural selection. Natural Selection has also been linked to the death of a specific species or type of animal. On January 6, 2011 thousands of blackbirds in Arkansas and hundreds of songbirds in Louisiana were found dead this weekend, people's imaginations went wild. But as strange as the news might have seemed, mass wildlife deaths aren't unusual. Ask Calvin Gehri. A biology technician for the U.S. Fish and Wildlife Service in La Crosse, Gehri has collected dead waterfowl on the Mississippi River every spring and fall for the past eight years. There usually are too many to count. In November, he estimated about 4,000 corpses were floating in the water above Lock and Dam No. 8 at Genoa, and another 400 upstream in pool 7. "In La Crosse there are thousands of birds dying every year, but because they're not hitting people's roofs and lawns it's not getting as much...
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This note was uploaded on 04/23/2011 for the course BIO 101 taught by Professor Ever during the Spring '11 term at University of Phoenix.

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CheckPoint Theories of Biology - Darwins theory of Natural...

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