When a population pyramid has a wide bottom and relatively narrow top What can be said about that population?
The shape of a Population Pyramid can be used to interpret a population. For example, a pyramid with a very wide base and a narrow top section suggests a population with both high fertility and death rates.
What does a wide base in a population pyramid suggest about a country’s population quizlet?
A population pyramid that is very wide at the base, indicating high birth and death rates. A population pyramid that comes in at the bottom. The population is generally older on average, as the country has long life expectancy, a low death rate, but also a low birth rate.
What important details can a population pyramid show quizlet?
* A population pyramid shows the age and sex structure of a population. The horizontal bars show the percentage of males and females in each age group.
What does a pyramid shaped age distribution mean quizlet?
A pyramid-shaped age distribution means that: the pre-reproductive group is the largest group. the population will grow for some time in the future.
What important details can a population pyramid show?
A population pyramid can be used to compare differences between male and female populations of an area. They also show the number of dependents (children and, sometimes, elderly people) and general structure of the population at any given moment.
What does a wide base in a population pyramid suggest?
A wide base means there are lots of young people, and suggests a high birth rate. A narrow base means a smaller proportion of young people, suggesting a low birth rate. A wide middle, tall pyramid means an ageing population, suggesting that there is a long life expectancy .
What are the types of population pyramid?
There are generally three types of population pyramids created from age-sex distributions– expansive, constrictive and stationary.
What country is in Stage 2?
Stage 2. Stage two has a high birth rate, but the death rate drops. Because of this the natural increase rate goes way up! A number of countries in Sub-Saharan Africa (Niger, Democratic Republic of the Congo, Somalia) are currently in stage two.
Why do countries move through the DTM?
Birth rates remain high. Total population is still rising rapidly. The gap between birth and death rates narrows due to the availability of contraception and fewer children being needed to work – due to the mechanisation of farming. The natural increase is high.
Why do countries in stages 1 and 2 have such high birth rates?
But why are both rates high? There are a number of factors that can influence a country towards a high birth rate and high death rate. Historically, high birth rates are attributed to societies that relied heavily on agricultural productivity or unskilled manual labor, because larger families meant a larger workforce.
What are three problems caused by rapid human population growth?
Describe three problems caused by rapid human population growth. Sample answer: the shortage of fuelwood, poor water quality, and impacts on land. Compare population growth in more-developed countries to population growth in less-developed countries.