How Carbon Dioxide Decreased (AQA GCSE Chemistry): Flashcards
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11 cards from this deck
How reduction occurred in atmosphere
How reduction occurred in atmosphere
Gradual process
Factors that influenced reduction
Factors that influenced reduction
Geological and biological
How oceans reduced atmospheric
How oceans reduced atmospheric
dissolved in them
Sediment formed from dissolved in oceans
Sediment formed from dissolved in oceans
Carbonate sediments
Example of carbonate sediment
Example of carbonate sediment
Limestone
Chemical formula of limestone
Chemical formula of limestone
How photosynthesising organisms reduced
How photosynthesising organisms reduced
Absorbed for photosynthesis
Timescale of reduction processes
Timescale of reduction processes
Billions of years
When atmosphere stabilised to current composition
When atmosphere stabilised to current composition
About 200 million years ago
% of nitrogen in modern atmosphere
% of nitrogen in modern atmosphere
78%
% of oxygen in modern atmosphere
% of oxygen in modern atmosphere
21%