Other questions in this quiz

2. the earliest atmosphere was formed by....

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

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

  • lava and molten rock
  • land
  • volcanoes
  • oceans

4. The Earths atmosphere today contains approximately 78% of...

  • carbonates
  • nitrogen
  • carbon dioxide
  • argon
  • neon

5. animals evolved using ...

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

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