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The opal is the National Gemstone of Australia. The opal is almost exclusively located within Cretaceous sedimentary rocks of the Great Artesian Basin, Intense weathering resulted in extensive silicification at relatively shallow levels within the Tertiary regolith.
What is this language... I don't know what this language is, pls use English for your questions next time.
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Congress starts a new term on <u>November 3 every four years. July 4 of even-numbered years. January 3 of odd-numbered years. January 1 every year</u><u>.</u>
<span>he dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants were obliged to live on their lord's land and give him homage, labor, and a share of the produce, notionally in exchange for military protection.</span>
