Science

4th -

5thgrade

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Respiratory and Circulatory System

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20 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    The __________ system carries oxygen and nutrients to all parts of our bodies.

    respiratory

    circulatory

  • 2. Multiple Choice
    30 seconds
    1 pt

    What does the circulatory system help our blood carry away from our body?

    oxygen

    hydrogen

    carbon dioxide

    helium

  • 3. Multiple Choice
    30 seconds
    1 pt

    What is the main organ of our circulatory system?

    heart

    lungs

    skin

    liver

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