Earth and Human Activity

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Population Noun

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[pop-yoo-lay-shun]

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Population

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All the members of a single species that are living in a specific geographical area at the same time.

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Example: The image shows different animals living together in a pond ecosystem, representing a population of species in one area.

Front

Emigration Noun

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[em-i-gray-shun]

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Emigration

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The act of individuals permanently leaving a population or geographical area to settle in another different location.

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Example: Birds leaving one population to join another show emigration.

Front

Immigration Noun

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[im-i-gray-shun]

Back

Immigration

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The act of individuals permanently moving into a new population or geographical area in order to live there.

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Example: A family with suitcases represents moving to a new place to live permanently.

Front

Age Structure Noun

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[ayj struk-cher]

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Age Structure

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The distribution of males and females within a population according to different age groups, like pre-reproductive or reproductive.

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Example: The image shows an age pyramid, illustrating how populations are divided by age and gender.

Front

Demographer Noun

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[dih-mog-ruh-fer]

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Demographer

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A scientist who studies the statistical characteristics of populations, such as their size, structure, distribution, and changes.

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Example: A population pyramid shows the age and gender distribution of a population, helping demographers study population structure.

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Natural Resource Noun

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[nach-er-ul ree-sors]

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Natural Resource

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Any material or substance from the environment that is useful or necessary for the survival of living organisms.

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Example: The image shows Earth as a source of water, illustrating how natural resources are essential for survival.

Front

Carrying Capacity Noun

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[kair-ee-ing kuh-pas-i-tee]

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Carrying Capacity

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The maximum number of individuals of a species that an environment can sustainably support over a long period.

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Example: The image shows a bucket filling with water to represent population growth and overflow to show exceeding carrying capacity.

Front

Population Growth Rate Noun

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[pop-yoo-lay-shun grohth rayt]

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Population Growth Rate

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The rate of increase in the number of individuals in a population over a specific period of time.

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Example: A graph showing the increase in rabbit population over time to illustrate population growth rate.

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Deforestation Noun

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[dee-for-eh-stay-shun]

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Deforestation

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The large-scale removal of forests from an area for human purposes, such as farming or building cities.

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Example: The image shows tree stumps and logs, illustrating deforestation as trees are cut down.

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Urbanization Noun

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[ur-bun-eye-zay-shun]

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Urbanization

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The process of developing towns and cities on land that was previously natural, leading to population shifts.

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Example: A city skyline with smoke shows urbanization and its effects on the environment.