Carbon Dioxide

Biology: AQA GCSE Higher, topic 7.3.6

Carbon Dioxide in the Atmosphere

Carbon dioxide is a greenhouse gas. Therefore, it is important to keep its atmospheric concentration at suitable levels.

Carbon dioxide removal

Carbon dioxide removal

  • Carbon dioxide is removed from the atmosphere naturally by green plants and algae during photosynthesis.
  • Other natural stores of carbon include bodies of water and peat bogs.
Carbon dioxide release

Carbon dioxide release

  • Carbon dioxide is released into the atmosphere naturally as the waste product of respiration.
  • However, many other unnatural processes, such as the burning of fossil fuels, also release carbon dioxide.

Test yourself on Carbon Dioxide

  • Why is it important to keep the concentration of carbon dioxide in the atmosphere at suitable levels?

  • How is carbon dioxide released into the atmosphere?

  • How is carbon dioxide removed from the atmosphere?

  • Which of the following are true regarding carbon dioxide?

  • Which of the following releases carbon dioxide into the atmosphere, rather than removing it?

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