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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 7
Score: 4
Author: jlovering
Last Modified: 4 years ago

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Respiration, Digestion, and Excretion Question

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Grade 7 Respiration, Digestion, and Excretion

What is the purpose of the respiratory system?
  1. to break down food for energy and nutrients
  2. to facilitate the exchange of oxygen and carbon dioxide
  3. to provide response to stimuli in the world around us
  4. to provide structure and support for the body
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