Study

Air

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  • Living organisms need air to breathe. (Yes or No)
    Yes.
  • 78% of air is oxygen. (Yes or No)
    No. 78% of air is nitrogen.
  • Glasses need air to breathe. (Yes or No)
    No
  • Carbon dioxide is used by plants to produce food. (Yes or No)
    Yes.
  • Air is not essential for respiration. (Yes or No)
    No. Air is essential for respiration.
  • Fire does not need air to burn. (Yes or No)
    No. Fire needs air to burn.
  • 1% of air is carbon dioxide, fire and snow. (Yes or No)
    No. 1% of air is carbon dioxide, water vapour.
  • Air is not essential for our lives. (Yes or No)
    No. Air is essential for our lives.
  • How many components of air are there?
    There are 3 components of air.
  • Very important = essential (Yes or No)
    Yes.
  • Oxygen accounts for 25% of air. (Yes or No)
    No. 21% of air is oxygen.
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