25. It can be inferred from the passage that one way in which many of the early researchers on grazer control could have improved their data would have been to
(A)emphasize the effects of temperature, rather than of light, on phytoplankton
(B)disregard nannoplankton in their analysis of phytoplankton numbers
(C)collect phytoplankton of all sizes before analyzing the extent of phytoplankton concentration
(D)recognize that phytoplankton other than net phytoplankton could be collected in a net
(E)understand the crucial significance of net phytoplankton in the diet of zooplankton
26. According to the passage, Hargrave and Geen did which of the following in their experiments?
(A)They compared the grazing rates of individual zooplankton species in the laboratory with the natural grazing rates of these species.
(B)The hypothesized about the population density of grazers in natural habitats by using data concerning the population density of grazers in the laboratory.
(C)They estimated the community grazing rates of zooplankton in the laboratory by using data concerning the natural community grazing rates of zooplankton.
(D)They estimated the natural community grazing rates of zooplankton by using data concerning the known population density of phytoplankton.
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