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1.In the diagram above, add arrows and labels to show the following activities:Release of carbon from respiration in the marine food chainMining and burning of coalBurning plant material2.Describe the biological origin of the following geological deposits of coal/oil: _______________________________________________________________________________________________________________________________3.Describe the two processes that release carbon in the atmosphere: _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________4.Name the four geological reservoirs (sinks), from the diagram above, that can act as a source of carbon:a) ___________________________________________c) ___________________________________________b) ___________________________________________d) ___________________________________________5.Explain what would happen to the carbon cycle if there were no decomposers present in an ecosystem:______________________________________________________________________________________________________________________________________________________________________________________________6.In natural circumstances, accumulated reserves of carbon as soil, coal, and oil represent a sink or natural diversion from the cycle. Eventually, the carbon in these sinks returns to the cycle.a)Describe three human activities that affect these sinks in the carbon cycle: ______________________________________________________________________________________________________________________________________________________________________________________________________________________b)Explain two global effects arising from this activity: _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________1.Describe five instances in the nitrogen cycle where bacterial action is important. Include the name of the processes and the changes to the form of nitrogen involved:a)________________________________________________________________________________________________________________________________________________________________________________________b)________________________________________________________________________________________________________________________________________________________________________________________c)________________________________________________________________________________________________________________________________________________________________________________________d)________________________________________________________________________________________________________________________________________________________________________________________e)________________________________________________________________________________________________________________________________________________________________________________________2.Identify two natural processes that fix nitrogen:a) ___________________________________________b) ___________________________________________3.Name the main geological reservoir that provides a source of nitrogen: _____________________________________4.State the form in which nitrogen is available to most plants: ______________________________________________5.Name a vital organic compound that plants need nitrogen containing ions for: _______________________________6.Describe how animals acquire the nitrogen they need: __________________________________________________________________________________________________________________________________________________7.Describe ways in which humans may intervene in the nitrogen cycle: ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________1.In the diagram, add a labeled arrow to show where one human activity might intervene in the phosphorous cycle.2.Name two types of molecules found in living organisms which include phosphorous as a part of their structure:a) ___________________________________________b) ___________________________________________3.List the origin of three forms of inorganic phosphate making up the geological reservoirs (sinks):a)____________________________________________________________________________________________b)____________________________________________________________________________________________c)____________________________________________________________________________________________4.Describe the processes that must occur on order to make phosphates stored in rocks available to plants again:_______________________________________________________________________________________________5.Identify one major difference between the phosphorous cycle and the carbon/nitrogen cycles:_______________________________________________________________________________________________1.Describe two ways in which sulfur can enter the atmosphere from natural sources:a) ___________________________________________b) ___________________________________________2.Describe two ways in which sulfur can enter the atmosphere as a result of human activity:a) ___________________________________________b) ___________________________________________3.Describe three processes that make sulfur in the soil available to uptake by plants:a)____________________________________________________________________________________________b)____________________________________________________________________________________________c)____________________________________________________________________________________________4.Describe two major roles of sulfur in the biosphere:a) ___________________________________________b) ___________________________________________ ................
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