Published on

Published in: Technology, News & Politics
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide


  1. 1. Population
  2. 2. Population <ul><li>Demography - the statistical study of the human population according to its composition, condition, and distribution at a certain moment in time, or in respect to its historical evolution. </li></ul>
  3. 3. World Population <ul><li>Currently, at the beginning of the 21st century, the world is populated by almost 7 billion people! </li></ul><ul><li>The world population has grown at different rates throughout history, sometimes growing rapidly and other times very slowly. </li></ul>http://www.bbc.co.uk/news/world-15391515
  4. 4. Population Growth <ul><li>During the Neolithic revolution, when food became more abundant and reliable due to agriculture, the world population increased from 5 million to 250 million at the beginning of our age. </li></ul><ul><li>The population increased again in the 19th century during the Industrial Revolution because of advances in medicine and sanitation. </li></ul><ul><li>During the 20th century, the population began to double every 25 years. </li></ul>
  5. 5. Population Growth <ul><li>Population Explosion: the rapid growth of the population due to a high number of births and a sudden decrease in the number of deaths. </li></ul>
  6. 6. The Density of Population <ul><li>The density of population is the relation between the population of a place and the space occupied by it. </li></ul><ul><li>Density of population is calculated by dividing the number of inhabitants (people) by the surface area. The number equals inhabitants per square kilometer. </li></ul>Example: If the population is 155,000 and the surface area is 62,000 square kilometers, the Density of Population = ? Density of Population = 155,000/62,000 = 2.5 inhabitants per square kilometer
  7. 7. World Population Distribution <ul><li>The distribution of the world population is unequal. Some areas are highly (densely) populated while other areas have a low (sparse) population. </li></ul><ul><li>The density of the population in an area depends on different factors such as the climate, natural resources, industrialization, etc. </li></ul>
  8. 8. Densely Populated Areas <ul><li>There are 4 major areas in the world that are the most densely populated. </li></ul><ul><li>They are: Eastern U.S., Europe, India, and China </li></ul>
  9. 9. Densely Populated Areas <ul><li>Eastern U.S. and Europe are densely populated areas because of the Industrial Revolution. </li></ul><ul><li>India and China are densely populated areas due to their rich agricultural resources. </li></ul>
  10. 10. Sparsely Populated Areas <ul><li>There are three different categories of areas in the world that are sparsely populated. </li></ul><ul><li>1) Areas that are found in the far northern or southern regions of the world: Southern Argentina, Northern Russia, Canada. </li></ul>These are very cold regions and the ground is continually frozen, preventing plants from being able to grow.
  11. 11. Sparsely Populated Areas <ul><li>2) Areas located in desert regions: Sahara, Northern China, Australia </li></ul><ul><li>3) Areas of rainforest: Amazon </li></ul>These areas lack resources of water, agriculture, and livestock These areas are filled with thick, wild vegetation
  12. 12. Moderately Populated Areas <ul><li>In the center of Africa and in Indonesia the density of the population is moderate. Although there are rain forests located in these regions, these areas also enjoy a better climate due to the mountains that surround the region. This allows the planting and growing of crops. </li></ul>