2. Which of the following biogeochemical cycles would you expect to be the slowest (because itdoes not have an atmospheric reservoir)?A. the nitrogen cycleB. the water cycleC. the phosphorus cycleD. the carbon cycleE. they would all be equally slow

Nitrogen fixation is a process in which atmospheric nitrogen is fixed into plant roots by the…

Answered: 2. Which of the following…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 3TYK

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Which process moves nutrients from the available organic compartment to the available inorganic compartment? a. respiration b. erosion c. assimilation d. sedimentation e. photosynthesis
The quantitative estimate of the total amount of living material is called (a) biomass (b) energy flow (c) gross primary productivity (d) plant respiration (e) net primary productivity
The major source of nutrients in the headwaters of a small stream is form: a. dead leaves and other organic matter from adjacent land. b. photosynthesis by phytoplankton. c. photosynthesis by floating aquatic plants. d. the activity of chemoautotrophic bacteria. e. minerals from the underlying bedrock.
Organisms at the lowest trophic level in a tallgrass prairie are all _______. a. two steps away from the original energy input b. autotrophs c. heterotrophs d. both a and b e. both a and c
The _____ cycle is a sedimentary cycle. a. phosphorus b. carbon c. nitrogen d. water
2)The greastes effect that hmans have on the carbon cycle derives from A) the production of methane from domestic cattle B) all of these C) the production of CFCs D) runoff of fertilizers from agriclture E) the burning of fossil fuels
1. Pick one of the biogeochemical cycles we are altering (C,N,P) and explain an environmental consequence associated with altering that cycle 2. Explain what we can do to get more Americans concerned about that issue 3. What actions are you willing to take personally to address your chosen issue (i.e. if you choose climate change, what steps would you actually take (not things you can do) to minimize your carbon footprint).
1. The variation in environmental conditions that is beyond the range of tolerance may result in a. None of these b. Deterioration of ecosystem c. Both b and d d. Loss of species that are vital links in food webs 2. Transpiration is a process involved in a. carbon dioxide b. phosphorus c. nitrogen d. water
1) A scientist finds that the gross primary productivity of the grasslands of the central United States is 55 g / m2 / year. If the respiration loss is 33 g / m2 / year, what is the net primary productivity? a) subtraction from gross productivity and respiration.b) The same as primary productivity.c) The value of respiration.d) The sum of gross primary productivity and respiration.
1. The community and abiotic factors in a contagious area._____ 2. Transformations of energy always result in some loss or dissipation of energy. _____ 3. A species makes the largest contribution to energy flow or mineral cycling._____
Involves the participation of decomposers a. water cycleb. carbon cyclec. nitrogen cycled. phosphorus cyclee. none of the cyclesf. all of the cycles
1) Identify the air pollutant you have chosen. a) What is the chemical composition of that pollutant? b) Is this air pollutant a primary or secondary pollutant? 2) Describe what is the primary source/cause of this air pollutant. Where does this air pollutant typically occur, i.e. does it occur in a specific geographic area or part of the atmosphere, or is it widespread? 3) Describe what effects do (or potentially do) this air pollutant have on the environment? Distinguish between a) physical effects on the environment/ecosystems and b) effects on living organisms. 4) Describe (be specific for each) what is being done to control this pollutant from the standpoint of a) laws/provisions of the Clean Air Act (or other laws) b) actual efforts to control its emissions.

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2. Which of the following biogeochemical cycles would you expect to be the slowest (because it does not have an atmospheric reservoir)? A. the nitrogen cycle B. the water cycle C. the phosphorus cycle D. the carbon cycle E. they would all be equally slow