Other questions in this quiz

2. The Earths early atmosphere did not contain what?

  • Volcanoes
  • Oxygen
  • Carbon dioxide
  • Water Vapour

3. Today the Earths atmospherehas much less than 1% carbon dioxide and has more than 21% oxygen this means that?

  • Carbin dioxide has been removed from the atmosphereand oxygen has been added to the atmosphere.
  • Todays oxygen has been removed from the atmosphere and carbon dioxide has been added

4. How does oxygen get added to our atmosphere?

  • The Earth cools and oceans form.Forms of life evolve in the oceans and photosynethesis begins.Oxygen builds up in the oceans.Oxygen builds up in the atmosphere.
  • The volcanoes gave out oxygen.

5. The Earths early atmosphere was formed by gases produced from what?

  • Volcanoes
  • Clouds
  • Plants


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