Which of the following statement(s) is/are true? Select the best overall answer. a. Kenward et al. reported that for each paired bird with eggs, there were three floaters in a European population of Common Buzzards b. in Complete Migration, there is predictable, seasonal movement of individuals between a breeding range and a non-breeding range (and back again) with no geographic overlap of these two ranges. The Broad-winged Hawk is an example of a species that exhibits Complete Migration. c. A paper by Bednarz et al. published in 1990, demonstrated with observational tallies of migrating raptor species that populations declined in migratory counts during the DDT era. d. all of the above e. only b and c

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Ecological adaptations

An ecological adaptation is any morphological, physiological, or behavioral trait of an organism that allows it to survive and reproduce in a habitat or ecosystem. Adaptation is a biological mechanism by which an organism gradually gets more acclimated to its surroundings.