Coevolution

  In the contest between predator and prey, some prey may have unique heritable characteristics that enable them to more successfully elude predators. Similarly, some predators may have characteristics that enable them to more successfully...

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Community Ecology

  Community ecology is concerned with the interaction of populations. One form of interaction is interspecific competition (competition between different species). The following concepts describe the various ways in which competition is...

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Human Population Growth

  About a thousand years ago, the human population began exponential growth. By increasing the carrying capacity of the environment and by immigrating to previously unoccupied habitats, the following factors made exponential growth...

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Population Ecology

  Population ecology is the study of the growth, abundance, and distribution of populations. Population abundance and distribution are described by the following terms: 1. The size of a population, symbolically represented by N, is the total number...

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Factors That Influence Development

  Since all of the cells created during embryonic development originate from the same original zygote, they each contain copies of the same chromosomes with the same DNA sequence. What, then, causes cells to become structurally and functionally...

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Social Behavior

  Animals may live in groups or they may be solitary. Sooner or later, however, all animals must make contact with others to reproduce. In each animal species, social behaviors have evolved that optimize individual fitness. Some patterns of...

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