population pyramid review

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today in class we learned about the population pyramid. On the pyramid the men are always on the left side and the women are always on the right and the young are always on the bottom and the old are on the top with a five year interval between each age.
pre reproductive years
10-14
5-9
0-4
reproductive years 
40-44
35-39
30-34
25-29
20-24
15-19
post reproductive years 
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80-89
90-94
95-99
100+

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