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  1. en.wikipedia.org › wiki › TertiaryTertiary - Wikipedia

    Tertiary (/ ˈ t ɜːr. ʃ ə. r i, ˈ t ɜː r. ʃ i ˌ ɛr. i / TUR-shə-ree, TUR-shee-err-ee) is an obsolete term for the geologic period from 66 million to 2.6 million years ago.

  2. The tertiary sector of the economy, generally known as the service sector, is the third of the three economic sectors in the three-sector model (also known as the economic cycle). The others are the primary sector ( raw materials ) and the secondary sector ( manufacturing ).

  3. May 20, 2024 · Wikipedia is not considered an appropriate source for college-level assignments. In fact, you should avoid citing any tertiary sources in your research. Instead, look at the References and Bibliography sections in Wikipedia entries and consider using those sources instead.

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