Science

5th -

8thgrade

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Excretory System

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11 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
    What is the main function of the excretory system?
    to collect and remove wastes from the body
    to strengthen skeletal muscles
    to protect the nervous system
    to bring oxygen to body cells
  • 2. Multiple Choice
    30 seconds
    1 pt

    Urine is _____ mixed with excess water.

    blood cells

    protein

    glucose

    urea

  • 3. Multiple Choice
    30 seconds
    1 pt

    Which organ helps the excretory system by eliminating water and some chemical wastes in perspiration (sweat)?

    lungs

    skin

    liver

    kidneys

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