Lect 16 Human Populations I and II PP outline

Lect 16 Human Populations I and II PP outline - The human...

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The human population is no different from any other population when it comes to measuring population change. We still look at birth rates, death rates, and immigration rates and emigration rates. Population Growth Rates A few examples from regions around the world…. . Rates of growth vary from place to place around the world, with a very apparent pattern. The developed world has lower rates of growth than the undeveloped world. Wealthy nations generally see lower growth Most growth is seen in the poor nations of the world Human Population Density Both the birth rate and the death rate have declined worldwide, but the death rate has declined much more than the birth rate, so the population is still increasing. United Nations Population Growth Estimates - World Data for 2005 75,635,000 people per year 207,219 more people per day! 8,634 per hour 144 per minute 2.4 per second Of course, all these 207,000+ people each day need a place to live, and food, and shelter, and health care, and clean water, and…… World population is growing at about 1.14% per year. That may not sound like much, but it is at a pace to double in size in about 61 years. Where do we find all this growth? Projected Human Population Growth Two Demographic Worlds Wealthy, old, and mostly shrinking populations. North America, Western Europe, Japan. Median age is about 38.6. Populations expected to decline. Poor, young, and rapidly growing populations. Least-developed countries. Africa, Asia, Latin America Median age 18.9 Contain 80% of world population, and will account for 90% of projected growth. All data: UN 2005 China and India combined have a population of roughly 2.42 billion people. About 37.5% of world population USA has roughly 300 million About 4.6% of world population
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A population size and growth rate is affected by total fertility rate: The average number of children a woman will have during her childbearing years TFR’s have dropped since 1950 In 2005 the average global TFR was 2.55 children per woman. Developed countries 1.59 (down from 2.5 in 1950) Developing countries 2.75 (down from 6.5 in 1950) Least developed countries 4.71 (down from 6.64 in 1950) Again, we see large differences from place to place….
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Lect 16 Human Populations I and II PP outline - The human...

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