Read the first sentence of a summary of the passage．Complete the summary by selecting the

THREE answer choices that express the most important ideas in the passage．Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage．This question is worth 2 points． Population ecology is the science of populations and the factors that influence them． ______ ______ ______

Answer Choices

A．A population is affected by its size，density, and dispersion, as well as the relationships among its members．

B．Dispersion of individuals in a population may be clumped, uniform, or random，as determined by environmental and social factors．

C．Clumping is related to safety；for example, fish swim in large schools to reduce their chances of being eaten by predators．

D．Most populations have either clumped or uniform. distribution because random spacing is rare in nature．

E．Populations change in density and dispersion as they respond to changes in environmental conditions and resource availability.

F．If a population has an abundant food supply and a suitable habitat, it will not undergo evolutionary change．