CGS NS 202 Study Guide - Midterm Guide: Habitat Destruction, Exponential Growth, Demographic Transition
21 Feb 2018
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Increased density impacts the environment, but relieves pressure in less-populated areas: humans are unevenly distributed around the globe, unpopulated areas tend to be environmentally sensitive (i. e, deserts) Is population growth really a problem: no: people can find or manufacture additional resources to keep pace with population growth, yes: not all resources can be replaced; even if they could, quality of life suffers. 1950: earth can support 2. 5 billion people comfortably: 4 billion: nonrenewable resource depletion, 5b: unsustainable growth rate (starvation, 6b: worldwide environmental damage. Some people fear falling populations: population growth is correlated with poverty, not wealth, policymakers believe growth increases economic, political and military strength. 67% of european nations think their birth rates are too low. In non-european nations, 49% feel their birth rates are too high. Population growth affects the environment: the ipat model: i= p(a)(t) Further model refinements include: sensitivity of environments to impacts, education, laws and ethics: demography, all population principles apply to humans.
