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Passage IV Column 2 heading

The passage indicates that female eels’ pupils expand and turn blue because the eels:

  • F. must adapt to see in an environment with much less light than they are used to.

  • G. are about to undergo a change in their blood chemistry.

  • H. no longer need to be able to recognize food sources since they have stopped eating.

  • J. need to be able to recognize the male eels that will fertilize their eggs.