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• Sodium chloride — NaCl redirects here. For the Google technology, see Google Native Client. This article is about the chemical compound. For sodium chloride in the diet, see Salt. For sodium chloride as a mineral, see Halite. Sodium chloride …   Wikipedia

• Lau event — The Lau event was the last of three [ The Ireviken event and Mulde event, other late Silurian extinction events, were both closely followed by isotopic excursions as was the Lau event.] relatively minor mass extinctions during the Silurian period …   Wikipedia