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A scientist studies a species of duck. The males and females are about the same size. The females are brown, and the males are a bright mix of blue, white, and green. What can the scientist conclude
about these ducks?
the females choose mates
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Asked 2/3/2011 8:44:26 AM
Updated 7/18/2012 10:22:40 AM
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the females choose mates
Added 7/18/2012 10:22:40 AM
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A person walks through the woods. A branch falls suddenly, almost hitting him, and his heart suddenly starts racing. What part of his nervous system causes his heart to race?
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Updated 2/3/2011 12:08:47 PM
1 Answer/Comment
The sympathetic division of the nervous system causes the heart to race in a situation like this. More information here:
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