Jamal has found that the fertility and mortality rates in his home country have remained the same for the last 50 years. What type of pyramid would BEST represent this population? A. stationary pyramid B. stable pyramid C. constrictive pyramid D. expansive pyramid
A. stationary pyramid
The type of pyramid that would represent a situation where the fertility and mortality rates have remained the same for the last 50 years is a stable pyramid (Option B).
To determine the population pyramid that would best represent a situation where the fertility and mortality rates have remained the same for the last 50 years, we need to understand the characteristics of each type of pyramid.
A. Stationary pyramid: This type of pyramid is characterized by roughly equal numbers of individuals at each age group. It indicates a stable population where the birth and death rates are balanced. However, if the fertility and mortality rates have remained the same, it is unlikely that the population would be stationary.
B. Stable pyramid: This type of pyramid has a wider base with decreasing proportions as age groups increase. It suggests that the birth and death rates are relatively stable, with the population size remaining similar across age groups. Given that the fertility and mortality rates have remained the same, a stable pyramid could be a good representation of the population in this case.
C. Constrictive pyramid: This type of pyramid demonstrates a narrower base with larger proportions at older age groups. It indicates a declining population due to low birth rates and longer life expectancies. Since the fertility and mortality rates have remained the same, a constrictive pyramid would not accurately represent the population in this scenario.
D. Expansive pyramid: This type of pyramid has a wide base with decreasing proportions as age groups increase. It suggests a growing population due to high birth rates and shorter life expectancies. In this case, because the fertility and mortality rates have remained the same, an expansive pyramid would not be the best representation.
Based on the given information, the most suitable population pyramid is the B. stable pyramid. This type of pyramid reflects a stable population where the fertility and mortality rates have remained the same over the past 50 years.