How Carbon Dioxide Decreased (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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Practise the cards
11 cards from this deck
What resulted from water vapour condensation?
What resulted from water vapour condensation?
Oceans formed, reducing atmospheric CO
What formed when CO dissolved in oceans
What formed when CO dissolved in oceans
Carbonate sediments
Example of carbonate sediment
Example of carbonate sediment
Limestone ()
Effect of limestone on atmosphere
Effect of limestone on atmosphere
Removed CO from atmosphere
Organisms that further reduced CO
Organisms that further reduced CO
Photosynthesising organisms
What plants/algae absorbed for photosynthesis
What plants/algae absorbed for photosynthesis
Carbon dioxide (CO)
Timescale of CO reduction processes
Timescale of CO reduction processes
Billions of years
When atmosphere stabilised to current form
When atmosphere stabilised to current form
About 200 million years ago
% nitrogen in modern atmosphere
% nitrogen in modern atmosphere
78%
% oxygen in modern atmosphere
% oxygen in modern atmosphere
21%
Factors influencing CO reduction
Factors influencing CO reduction
Geological and biological