Recent Examples on the WebThe primary root cause of humanitarian migration from Central America is the U.S. government.
Felipe De La Hoz, The New Republic, 1 Apr. 2021 Arabidopsis thaliana, a small flowering plant that is often used by biologists for plant research, is the star of this video by Daniel von Wangenheim, which shows a new root growing laterally off a primary root.
Scientific American, 16 Mar. 2021
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