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Type: Multiple-Choice
Category: Respiration Digestion and Excretion
Level: Grade 2
Score: 3
Tags: respiratory system
Author: megsmill orange star
Last Modified: 49 weeks ago

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Grade 2 :: Respiration Digestion and Excretion by megsmill
Which system works with breathing oxygen into the lungs?
  1. digestive system
  2. respiratory system
  3. nervous system
  4. none of these