part 2

10 This is a picture of the increasing population of the United States in only one hundred years. One person in the picture represents twenty million (20,000,000) people. This picture is a graph. This graph lets us see relations between times and numbers of people in the one hundred years from 1900 to 2000.

11 This map gives a picture of the population in the different states of the United States of America in 2000. The scale of the map is the same as that used for Europe on page 9. If you look at the two you will see that the U.S.A. is not much smaller than all of Europe.

12 Which are the countries with the most people in them? China, India, the U.S.A and Indonesia all have populations of over two hundred million. Some countries have less room in them than these four, but these have the greatest populations. It is not good for a country if it does not have enough room for all its people. A person who does not have enough room to live in may not be able to keep well.

13 The population of the earth has increased more than the amount of food. There is a great need for more food. More than a billion people on the earth today need more food than they can get. They cannot get enough food to keep them well and strong. The relation between amount of food and size of population has been changing.

14 There were more than twice as many people in the world in the year 1900 as in 1700. There were more than twice as many in 2000 as in 1900. Will the population of the world go on increasing? Look at the curve in this picture. The increase since 2000 makes it look that way. The world population in 2004 was 6,396,000,000. In the last four years the increase has been almost 300,000,000.

15 There were over six billion one hundred million (6,100,000,000) people in the world in 2000. Over one billion of them could not get as much food as they needed. Many of them because of this are not healthy. There are some people everywhere who take more food than is good for them, but many more get less than they need. People are asking one another what the world population will be in 2050 if it goes on increasing like this. It will be very great. It will be much greater in some parts of the world than in others. Some people say it will be between nine and ten billion, and some that it may be as much as twenty billion.