1. “Allocation”: A general model of an ecosystem locates positions in the flow of energy and materials to the Sun, atmospheric gases, water, nutrients, plants, decomposers, herbivores, and carnivores. What position would you allocate to human beings?
2. “Locusts or Rats” Given the growth rate of the human population in recent centuries, would locusts or rats be justified in describing human beings as a planetary plague? Why?
3. “Twentieth Century World Population Explosion” Watch the podcast, “Distilled Demographics Mortality Rate” from the Population Reference Bureau (PRB) at http://www.prb.org/Journalists/Webcasts/2010/distilleddemographics3.aspx
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