Sound production is also known as phonation, and involves the process of vibrations generated by a combination of respiration, the vocal organ and the vocal tract. The physical structures that birds use are highly similar to that of humans, and the sounds that is generated travels through respired air.
who is this Justin Bieber??!
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the structure is external gills
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Because of her position within it.
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It's visible just so long as the sky is clear and the light pollution is minimal.
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Chromosomes
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This is why cheek swaps are done. They give more information about the body than muscle cells
