Transcription of A LEVEL GEOGRAPHY REVISION GUIDE Paper 1: Physical …
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A LEVEL GEOGRAPHY REVISION GUIDE Paper 1: Physical …
A LEVEL GEOGRAPHY REVISION GUIDE Paper 1: Physical GEOGRAPHY 2020 THE WATER AND carbon CYCLES Water cycles The global hydrological cycle is of enormous importance to life on earth. The global hydrological cycle s operation as a closed system (inputs, outputs, stores and flows) driven by solar energy and gravitational potential energy. The relative importance and size (percentage contribution) of the water stores (oceans, atmosphere, biosphere, cryosphere, groundwater and surface water) and annual fluxes between atmosphere, ocean and land.
Terrestrial primary producers sequester carbon during photosynthesis; some of this carbon is returned to the atmosphere during respiration by consumer organisms. Biological carbon can be stored as dead organic matter in soils, or returned to the atmosphere via biological decomposition over several years.
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