ESS205H1 Study Guide - Final Guide: Total Fertility Rate, Infant Mortality, Anthropocene
Document Summary
The current geological period, when human activities have a powerful impact on the global environment. Demography: the study of populations, why they increase or decrease over time. How they respond to environment, predation and disease, competition for food and resources. What stops a population from increasing indefinitely. Growth rate : rate of change of a populations size. Global growth rate = birth rate death rate local scale: immigration (i) and emigration (e) local growth rate r = b+i-d-e. Increase population interest environment resistant limits population environment resistance: unfavourable environmental conditions, prevents growth at full potential. Population rarely stabilize at a constant carrying capacity, always chaging as environmental conditions change slightly above or below carrying capacity, it would crash if it goes too high. Decrease in birth rate/death rate food supply, medical care, higher water & air quality. The carrying capacity of earth: assumptions 4-16 billion.
