Model/diagram the sources and sinks of carbon in the global ecosystem. You will need to create TWO models/diagrams of the sources and sinks of carbon. In the first model diagram the sources and sinks of carbon in a natural, pre-industrial landscape. In the second model, diagram the

Propose a reason why the CO2 fluxes are greater for terrestrial biological activity than for marine biological activity.

(2) Name the human activity that is responsible for the greatest change to the amount of carbon (3) Explain how farming cattle to provide meat and milk may change the amount of carbon in 7.3 The carbon cycle available for cycling. buning of fossil fuels such as coal, oil anel aas 3 the atmosphere. Analyse the information proided about how human activity changes the carbon cyele o the diagram of the carbon cycle below: (a) colour in red the arrows that represent movements of carbon that would be increasendi human activity (b) colour in blue the arrows that represent movements of carbon that would be reduced be human activity Scarbon dioxide in air burning of fossil fuels for vehicles, electricity and heat burning of forests, fuel wood and organic debris photosynthesis A carbon stored in plant tissue terrestrial food chains carbon stored in animal tissue respiration < /decompoOsers coal wastes, dead organisms Tme photosynthesis (aquatic food chains) ol and gas time ----- - formation of…

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