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Food security is a term that is used in reference to the food problem and is defined as the condition in which "all people, all the time, have access to sufficient, safe, and nutritious food to meet their dietary needs for an active and healthy life” (Childers 2011). This concept of food security is closely linked with the human population because with the increase of people, the demand for food goes up, the land required for agriculture goes up, related environmental consequences goes up, and the food security of the globe worsens.  

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“The major challenge for humanity in the twenty-first century is to learn to live within the web of life on Earth without destroying it.” (Cassils, 2004)   With a population that has recently reached and exceeded 7 billion people, the interwoven problems in relation to overpopulation, consumption, resource depletion, and environmental degradation continues to be compounded upon (Ehrlich, 2012). Overpopulation in relation to these other factors is not strictly an issue among the science community, but is also a highly political and economic issue as well.

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“Although human overpopulation is one of the greatest threats to biodiversity-and indeed to our continued existence-it is a low priority for most people (Gehrt, 1996).”   

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