Population &feature=related

Population density is the measure of the number per unit area. It is commonly represented as people per square mile. which is derived simply by dividing... total area population / land area in square miles

Overpopulation is when there are too many people relative to available resources. Simple density is not the determinant.

World and Country Population Totals Distribution and Structure: 3/4 of people live on 5% of earth's surface! Total: 6.9 billion on planet as of September 27, 2011 Five most populous regions and countries REGIONPOPULATION COUNTRY POPULATION F East Asia1.6 billion China1.3 billion F South Asia1.5 billion India1.1 billion F Europe1 billion U.S. 300 million F SE Asia600 million Indonesia 250 million F Canada 275 million Brazil188 million

Rates of Natural Population Increase

Total Fertility Rate

Life Expectancy

Population pyramids are used to show information about the age and gender of people in a specific country. MaleFemale Population in millions In this country there is a high Birth Rate There is also a high Death Rate. This population pyramid is typical of countries in poorer parts of the world (LEDCs.)

In some LEDCs the government is encouraging couples to have smaller families. This means the birth rate has fallen.

MaleFemale Population in millions In this country the number of people in each age group is about the same. The largest category of people were born about 40 years ago. In this country there is a low Birth Rate and a low Death Rate. This population pyramid is typical of countries in the richer parts of the world (MEDCs.)

Population in millions MaleFemale In this country the birth rate is decreasing. In the future the elderly people will make up the largest section of the population in this country. This is happening more and more in many of the world’s richer countries.

Male Female Population in thousands This country has a large number of temporary workers. These are people who migrate here especially to find a job.

Population pyramid for Mozambique. Population pyramid for Iceland.

What happens next?

What is going to happen to Japan’s population in the future? Why does this matter?

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Exponential Growth

Population and Resource Consumption

Technology, Energy Consumption, and Environmental Impact There has been a dramatic increase in: individual energy use over time: 3,000 kcal/person - 300,000 kcal/person the power of technology to change the environment: think stone axe versus bulldozer versus atomic bomb. The scope and severity of environmental impacts.

Demographics characteristics of human populations and population segments

MOVEMENT

WHY DO WE MOVE? PUSH FACTORS (things that would push us to leave the area) Weather and Climate- Texas in August Cost of living – a house in Cali costs $450,000 Personal Safety – WAR, plague, famine Environmental Catastrophes – tsunami, earthquakes, hurricanes Emigration/Emigrant

PULL FACTORS (things that would pull us want to an area) availability of jobs religious or political freedom Safety Immigration/Immigrant

Where do we move to? Rural

Urban Mexico City Pop. 18,836,045 8 th largest city in the World

The End