If the population pyramid is broader at the bottom and narrow after the age of 60 years is the Birth Rate high or low?
Answers
Answer:
A population pyramid, also called an "age-gender-pyramid", is a graphical illustration that shows the distribution of various age groups in a population (typically that of a country or region of the world), which forms the shape of a pyramid when the population is growing.[1] Males are conventionally shown on the left and females on the right, and they may be measured by raw number or as a percentage of the total population. This tool can be used to visualize the age of a particular population.[2] It is also used in ecology to determine the overall age distribution of a population; an indication of the reproductive capabilities and likelihood of the continuation of a species.
Answer:
Population pyramid: a pyramid-shaped diagram illustrating the age distribution of a population. The youngest is represented by a rectangle at the base, the oldest by one at the apex. The apex of a diminishing population is broad and an expanding population is narrow, whereas in a stabilized population it is only smaller than pre-reproductive and reproductive age groups.
Stable pyramid: A population pyramid showing an unchanging pattern of fertility and mortality.
Stationary pyramid: A population pyramid typical of countries with low fertility and low mortality, very similar to a constrictive pyramid.
Expansive pyramid: A population pyramid that is very wide at the base, indicating high birth and death rates.
Constrictive pyramid: A population pyramid that comes in at the bottom. The population is generally older on average, as the country has a long life expectancy, a low death rate, but also a low birth rate. This pyramid is becoming more common, especially when immigrants are factored out, and is a typical pattern for a very developed country, a high level of education, easy access to and incentive to use birth control, good health care, and few negative environmental factors