A tool by Leon Dudhill
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Key Processes
  • PhotosynthesisPlants absorb CO₂ from atmosphere, convert to organic compounds using light energy.
  • RespirationAll living organisms release CO₂ back into the atmosphere.
  • CombustionBurning fossil fuels and wood releases stored carbon as CO₂.
  • DecompositionDecomposers break down dead matter, releasing CO₂ through respiration.
  • FeedingCarbon passes along food chains when organisms consume each other.
  • FossilisationDead organisms become fossil fuels over millions of years — carbon locked away.
Carbon stores

Atmosphere · Plants · Animals · Soil · Oceans · Fossil fuels

Question types
Multiple Choice Typed Answer
Multiple Choice
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6 seconds per question
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Into atmosphere: respiration, combustion, decomposition.

Out of atmosphere: photosynthesis.

Along food chain: feeding / consumption.

Locked away: fossilisation → fossil fuels.