Answer to Question 1
There are six impacts from rapid growth on the populations of rural developing countries:
(1) Overcultivation, soil erosion, and depletion of fertility; (2) Overfishing and depletion of marine stocks; (3) Poaching of wildlife, drugs, corruption, and other illegal activities; (4) Moving to cities, squalor, and disease; (5) migration and immigration pressures on developed countries; and (6) Bringing new land into production through deforestation, draining wetlands, and irrigation. In urban areas, environmental and social impact include: overpopulation in small spaces, conversion and fragmentation of natural ecosystems, concentration of municipal solid waste and human waste, and concentration of pollution.
Answer to Question 2
The three factors are population, affluence, and technology. Developed nations are not exempt from environmental impact because these countries have tremendous affluence and therefore a substantial consumption level. Stewardship is a modifier; attention to wildlife conservation, pollution control, energy conservation and efficiency, and recycling may offset, to some extent, the negative impact of a consumer lifestyle.
Genetic drift and population size.
Estimating cicada population size and predation rates by birds.
The twin method can be used to investigate genetic and environmental influences on the development o
Population: Historic Patterns
The population of a city has continued to grow since 1950.
Exponential Growth in Mice