What is an age structure quizlet?
Collects data on all of the ages present in a population at some particular moment. It therefore generates a cross section of the population with respect to time.
What is a population’s age structure quizlet?
age structure. A population’s age structure—the proportions of individuals at various ages—can have a strong effect on how rapidly it increases or decreases in size. biotic potential. Species vary in their biotic potential or capacity for population growth under ideal conditions. You just studied 26 terms!
What is the age structure of population?
The age structure of a population is the distribution of people of various ages. It is a useful tool for social scientists, public health and health care experts, policy analysts, and policy-makers because it illustrates population trends like rates of births and deaths.
What is age structure in environmental science?
Age Structure. the relative number of individuals of each age in a population. Crude Birthrate. The number of live births per thousand in a population in a given year.
What is the value of age structure pyramids quizlet?
It is useful in understanding and predicting population growth. 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.
What is the age structure of a population explain how it affects population growth and economic growth?
Age structure data allow the rate of growth (or decline) to be associated with a population’s level of economic development. For example, the population of a country with rapid growth has a triangle-shaped age structure with a greater proportion of younger individuals who are at or close to reproductive age.
What are K selected species?
K-selected species possess relatively stable populations fluctuating near the carrying capacity of the environment. These species are characterized by having only a few offspring but investing high amounts of parental care. Elephants, humans, and bison are all k-selected species.
What is the definition of age structure?
Age Structure The proportion of the total population in each age group. Age-Sex Structure The composition of a population as determined by the number or proportion of males and females in each age category.
What is age structure and why is it important?
Age structure reflects the proportions of individuals at different life stages. This variable is an important indicator of population status.
What does age structure mean?
age structure: The composition of a population in terms of the proportions of individuals of different ages; represented as a bar graph with younger ages at the bottom and males and females on either side.
What is the purpose of an age structure diagram?
One of the tools that demographers use to understand population is the age structure diagram (it is sometimes called a population pyramid, but it is not always pyramidal in shape). This diagram shows the distribution by ages of females and males within a certain population in graphic form.