Other questions in this quiz

2. Percentage of nitrogen in our atmosphere?

  • 78
  • 21
  • 1
  • 43

3. What was the Earth like around 4.5 billion years ago?

  • Hot and sunny
  • Violent and volcanic
  • Cold and damp
  • Quiet and peaceful

4. Percentage of oxygen in our atmosphere?

  • 90
  • 21
  • 3
  • 79

5. What does the Greenhouse gas effect do to our atmosphere?

  • Makes it cleaner
  • Increases it's temperature
  • Adds more chemicals to it
  • Decreases it's temperature

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