The study of how organisms interact with each other and with their environments.

A group of individuals that interbreed and produce fertile offspring.

Members of a species that live in the same area at the same time.

All of the population in a particular area.

All of the living things and their physical environments within a particular area.

All parts of Earth that host life, with all its organisms and environments.

Parts of an ecosystem that are living or used to be living.

Parts of an ecosystem that have never been living.

The specific environment in which an organism lives.

Anything an organism needs,including nutrition, shelter, breeding sites, and mates.

Describes the number of individual organisms present in a given population at a given time.

Describes the number of individuals within a population per unit area.

Population Distribution

Sometimes called population dispersion, describes how organisms are arranged within an area.

Describes the relative numbers of organisms each age within population.

Age Structure Diagrams

Are visual tools scientist use to show the age structure of populations.

Its proportion of males to females.

To show how the likelihood of death varies with age, population.

Is the arrival of individuals from outside a given area.

Is the departure of individuals from a given area.

Is a seasonal movement into and out of an area.

When a population increases by a fixed percentage each year.

Characteristics of the environment that limit population growth.

The largest population size given environment can sustainably support.

Describes How a population's initial exponential increase is slowed and finally stopped by limiting factors.

Density-Dependent Factor

Its influence changes with population density.

Density-independent Factors

Limiting factors who's influence is not affected by population density.

Maximum ability to produce offspring in ideal conditions

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Chapter 4 vocab

Chapter 4

Term	Definition
Ecology	The study of how organisms interact with each other and with their environments.
Species	A group of individuals that interbreed and produce fertile offspring.
Population	Members of a species that live in the same area at the same time.
Community	All of the population in a particular area.
Ecosystem	All of the living things and their physical environments within a particular area.
Biosphere	All parts of Earth that host life, with all its organisms and environments.
Biotic Factors	Parts of an ecosystem that are living or used to be living.
Abiotic Factors	Parts of an ecosystem that have never been living.
Habitat	The specific environment in which an organism lives.
Resource	Anything an organism needs,including nutrition, shelter, breeding sites, and mates.
Population Size	Describes the number of individual organisms present in a given population at a given time.
Population Density	Describes the number of individuals within a population per unit area.
Population Distribution	Sometimes called population dispersion, describes how organisms are arranged within an area.
Age Structure	Describes the relative numbers of organisms each age within population.
Age Structure Diagrams	Are visual tools scientist use to show the age structure of populations.
Sex Ratio	Its proportion of males to females.
Survivorship curves	To show how the likelihood of death varies with age, population.
Immigration	Is the arrival of individuals from outside a given area.
Emigration	Is the departure of individuals from a given area.
Migration	Is a seasonal movement into and out of an area.
Exponential Growth	When a population increases by a fixed percentage each year.
Limiting Factors	Characteristics of the environment that limit population growth.
Carrying Capacity	The largest population size given environment can sustainably support.
Logistic Growth	Describes How a population's initial exponential increase is slowed and finally stopped by limiting factors.
Density-Dependent Factor	Its influence changes with population density.
Density-independent Factors	Limiting factors who's influence is not affected by population density.
Biotic Potential	Maximum ability to produce offspring in ideal conditions

Created by: Kamyrah

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