ES 100 Lecture 7: Chapter7

• School: NCSU
• Department: Environmental Science
• Course: ES 100
• Professor: Stephanie Jeffries

Document Summary

Every second 4-5 children are born while only 2 people die. There is a net gain of roughly 2. 5 persons per second. Current world population >7 billion and growing at 1. 13% per year. Increasing carrying capacity: the population bomb (1968 earth"s population was 3. 5 billion) predicted widespread starvation in the 1970s due to overpopulation. Technology can boost carrying capacity as we make progress in agriculture, engineering, commerce and medicine. These achievements make it possible to support many more people per unit area. Effects of population on the environment are not due to numbers alone. A single american living an affluent lifestyle produces more pollution than an entire village of farmers in africa. The term demography is derived from the greek words demos (people) and graphos (to write or to measure). Demography encompasses vital statistics about people, such as births, deaths, and where they live, as well as total population size.