An animal ecologist interested in gradient analysis would:
A) measure the abundance of animal species and physical conditions at a number of locations and then plot the abundance of each species as a function of one or more physical conditions.
B) perform controlled crosses among all animal species within a community to determine the extent to which the species are reproductively isolated.
C) compare the relative concentrations of all essential elements found in tissue samples taken from all animal species within a community.
D) characterize the trophic structure of the community by determining "who eats whom."
Ans: A) measure the abundance of animal species and physical conditions at a number of locations and then plot the abundance of each species as a function of one or more physical conditions.
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