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Type: Multiple-Choice
Category: Zoology
Level: Grade 11
Author: csjonline
Created: a year ago

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Zoology Question

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Grade 11 Zoology

The key function of bony fish's bladders is to                                                    .
  1. speed their swimming up so as to catch preys
  2. regulate their body temperature to prevent overheat
  3. store fat as backup energy in case of food shortage
  4. help them balance between sinking and floating
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