Other questions in this quiz

2. the earliest atmosphere is thought to have contained mainly....

  • nitrogen
  • carbon dioxide
  • carbonates
  • neon
  • argon

3. animals evolved using ...

  • oxygen to respire
  • oxygen to photosynthesies
  • carbon dioxide to rispire
  • carbon dioxide to photosynthesies

4. what brought water to Earth?

  • concentrated water vapour and comets
  • rain just fell

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

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

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