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Upper Sonoran

adjective
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Definition of Upper Sonoran

: of, relating to, being, or native to the cooler part of the Sonoran life zone that adjoins the Transition zone — compare lower sonoran

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“Upper Sonoran.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Upper%20Sonoran. Accessed 22 Jan. 2021.

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