SCI 1102 Chapter Notes - Chapter 8: Doubling Time, Ecological Debt, Exponential Growth
Document Summary
Growth would exhaust resources were ruining the soils, water, forests, and polluting the air and threaten stability. Instituted pop. control program that prohibited chinese couples from having more than 1 child (1979) Program began with education encouraging people to have fewer children, then the chinese gov. increased availability to contraceptives and abortion and by 1975 pop. growth had dropped from 2. 8% to 1. 8% 1984, the one child policy was loosened. Led to unbalanced sex ratio, other consequences etc. One of the greatest challenges is finding ways to slow human pop. Over 7 billion, grows more than 70 million each year. Exponential growth: increase in a quantity by fixed unit percentage per unit time. Exponential growth accelerates increase in population size. Even if the growth rate remains steady pop. Size will increase by greater increments with each generation. Reduced infant mortality rates (frequency of child dying in infancy) Birth rates have not declined, and births have outpaced deaths for many years.
