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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 7
Score: 1
Author: shogg
Last Modified: 22 days ago

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Respiration, Digestion, and Excretion Question

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Grade 7 Respiration, Digestion, and Excretion

When you inhale, oxygen enters your body through the
  1. esophagus.
  2. nose.
  3. diaphragm.
  4. heart.
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