Population pyramids show the sex and age of the population for a certain place. The difference in distribution will be seen depending on what region the information is received from. In this graph, the population in Sudan for the year 1995 is shown. Females are located on the right side and males are on the left side. The x-axis shows the population in thousands of both sexes, and the y-axis shows the age of both sexes. From this map, it is easy to see that once a child is born, his or her change of surviving decreases every year. There are many more children age 0-4 than there are people over 60. This could mean there is a third variable creating these population changes.
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