+"Be7" primarily denotes [Beryllium-7](/wiki/Beryllium-7), a short-lived [radioisotope](/wiki/Radioisotope) of beryllium. Formed by cosmic ray spallation in Earth's atmosphere, its presence provides insight into solar activity and atmospheric transport.
+## See also
+- [Beryllium](/wiki/Beryllium)
+- [Isotope](/wiki/Isotope)
+- [Radioactivity](/wiki/Radioactivity)
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