QUESTION IMAGE
Question
you will remember each. one term has been done for you.
| term | definition | term in a sentence |
|---|---|---|
| population density | the number of individuals within a population per unit area | the city high population density requires efficient public transport to move people |
| population distribution | organisms they are arrange within the area | world population distribution is uneven |
| age structure | describe the relative number of organisms of each age within a population | age structure in my family is 10:1 |
| age structure diagram | visual tools scientists use to show the age structure of population | |
| sex ratio | proportion of male and females |
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Population size
- Definition: The total count of individuals of a species in a given area and time frame.
- Term in a sentence: A sudden wildfire caused the local fox population size to drop by nearly 40% in one week.
Population density
- Definition: The number of individuals of a population that live in a defined unit of area.
- Term in a sentence: The city's high population density means public transit must run frequently to serve everyone.
Population distribution
- Definition: The pattern of how individuals in a population are spread out across their habitat.
- Term in a sentence: The world human population distribution is uneven, with most people clustered near coasts and rivers.
Age structure
- Definition: The relative proportion of individuals in each age group within a population.
- Term in a sentence: The age structure in this rural town is skewed older, as young people move to cities for work.
Age structure diagram
- Definition: A visual graph that displays the age structure of a population, typically split by sex.
- Term in a sentence: Scientists use an age structure diagram to predict if a population will grow or shrink in the future.
Sex ratio
- Definition: The proportion of male individuals compared to female individuals in a population.
- Term in a sentence: A skewed sex ratio with far more males than females can reduce breeding rates in a bird population.