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cristinaloayza cristinaloayza
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6 years ago
A fish's swim bladder is an internal organ that ___________.
 
  a) collects waste
  b) processes food within the fish while it's swimming
  c) only males have, and it is used to store sperm
  d) enables the fish to achieve neutral buoyancy
  e) all of the above
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zxcvbnzxcvbn
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6 years ago
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