Other questions in this quiz

2. What percentage of the modern atmosphere is nitrogen?

  • 81%
  • 78%
  • 21%
  • 84%

3. What increased CO2 in the early atmosphere?

  • Respiration
  • Photosynthesis
  • Volcanic activity
  • Pollution and fossil fuels being burnt

4. Which gas is missing from the early atmosphere?

  • Carbon dioxide
  • Oxygen
  • Water vapour
  • Ammonia

5. What percentage of the modern atmosphere is oxygen?

  • 21%
  • 63%
  • 19%
  • 80%

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all The earth and its atmosphere resources »