143.All of the following are elements involved in major biogeochemical cycles except
144.Earth's chemical cycles connect life of the present to life of the
145.Which statement describes field research least?
146.Which statement leastcharacterizes laboratory research? A. It allows measurement of model ecosystems and populations under controlled conditions.B. It is faster than similar field research.C. It is cheaper than similar field research.D.It has been used to develop most of our knowledge about ecosystems.E. None of these answers.
147.Which statementleast characterizes systems analysis as a research strategy?
148.Choose the sequence which correctly lists the major stages of system analysis from beginning to end.
149.One member of a system analysis team is a math whiz who loves to construct mathematical models describing interactions of different variables. If you were a system manager, to which stage of the system analysis would you assign this person?