Other questions in this quiz

2. What reduced Carbon diocide in the Early atmosphere?

  • Water vapours condensed and cooled to form water which fell as rain and filled the hollow crusts.
  • water fell as rain

3. What is the amount of oxygen in the air in the Earths early atmosphere?

  • 0.001%
  • 21%
  • little or no oxygen
  • 78%

4. What can limestone make?

  • stones
  • Glass
  • shoes
  • Carpet

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