Breed-specific legislation

Essay specific features

 

Issue:

Social Issues

 

Written by:

Kari R

 

Date added:

November 30, 2011

 

Level:

University

 

Grade:

A

 

No of pages / words:

8 / 2238

 

Was viewed:

4814 times

 

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Essay content:

The evolutionary advantage of singing and mimicry is not quite known, but most researchers agree there must be a survival advantage. The degree of bird intelligence is debated, giving rise to a number of interesting studies on the cognitive ability of these animals. Body Human beings vibrate the vocal cords, located near the larynx, with the help of the tongue and lips to form words...
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Though birds possess a larynx, they actually use a structure known as the syrinx, located in the throat, to make sounds and vocalizations (4). The syrinx is basically the equivalent of the human voice box, which is located above the trachea. However, the syrinx is located farther down, at the junction of two bronchi leading to the lungs, resulting in two potential sound sources (5)...
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