Demographic Change Stock Videos

Browse 795 demographic change videos and clips available to use in your projects, or start a new search to explore more footage and b-roll video clips.

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ecology: barry commoner's viewpoint - part 25 of 33. this unique introduction to the study of ecology features one of america's most outspoken biologists. dr. barry commoner explains technology's threat to the environment by describing four principles of - demographic change stock videos & royalty-free footage
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Ecology: Barry Commoner's Viewpoint - part 25 of 33. This unique introduction to the study of ecology features one of America's most outspoken biologists. Dr. Barry Commoner explains technology's threat to the environment by describing four principles of
Demography, Pollution, Change
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the progressive era: reform works in america - part 6 of 40. describes the years spanning 1890-1915 and how they marked this period of american history as one of great turmoil and violence. bankrupt farmers, slums, appalling work conditions, inhuman chil - demographic change stock videos & royalty-free footage
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The Progressive Era: Reform Works in America - part 6 of 40. Describes the years spanning 1890-1915 and how they marked this period of American history as one of great turmoil and violence. Bankrupt farmers, slums, appalling work conditions, inhuman chil
Hat, USA, War
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social insects: the honeybee - part 35 of 41. shows that social insects, such as the honeybee, live in colonies and are divided into castes, each of which contributes to the life of the colony. illustrates the particular adaptation of various castes to r - demographic change stock videos & royalty-free footage
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Social Insects: The Honeybee - part 35 of 41. Shows that social insects, such as the honeybee, live in colonies and are divided into castes, each of which contributes to the life of the colony. Illustrates the particular adaptation of various castes to r
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