Other questions in this quiz

2. The earth was a molten ball of....

  • rock and water
  • rock and minerals
  • lava and rock

3. what brought water to Earth?

  • concentrated water vapour and comets
  • rain just fell

4. the earliest atmosphere was formed by....

  • global warming
  • volcano activity
  • animals breathing
  • plants decaying

5. over 500 million years ago the earth was covered in

  • volcanoes
  • oceans
  • lava and molten rock
  • land

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