A scientist is researching a population of blue jays in her city. In order to completely define this blue jay population, she must determine:

A)the size, range, and density of the blue jay population.
B)the predators and parasites of the blue jay population.
C)the climates in which the blue jays can survive.
D)whether the blue jays are r- or K-strategists.
E)the typical life history for an individual blue jay.