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MCQ:

Urea in high concentration may cause damage to fishes so they retain a protecting chemical against urea called

  1. trimethyloxide
  2. methyl oxide
  3. hydrogen oxide
  4. hydrogen peroxide

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Osmoregulation App (Android & iOS)

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College Biology App (iOS & Android)

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10th Grade Biology App (Android & iOS)

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Cell Biology App (iOS & Android)