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zoology

 
 
austere
 
Reply Wed 10 Sep, 2014 02:59 am
What is diffrence between lungs and swim bladder?
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Type: Question • Score: 3 • Views: 1,132 • Replies: 1
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Setanta
 
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Reply Wed 10 Sep, 2014 03:17 am
Swim bladders are organs which developed to allow fish to control their buoyancy--how deep in the water they move. Lungs are believed to have developed from swim bladders.
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