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The barrier islands shelter and protect the mainland from the powerful forces of wind, waves, tides, currents and the ravages of storms and hurricanes. They shelter the estuaries that form behind the barriers.
Barrier islands form as waves repeatedly deposit sediment parallel to the shoreline. As wind and waves shift in keeping with weather styles and neighborhood geographic features, those islands constantly pass, erode, and grow. They can even disappear entirely.
Key Biscayne is a barrier island found at the bottom give up of a sequence of islands that stretches alongside the southeastern coast of Florida. Barrier islands are construct-united states of sand that shape alongside the coast of larger land bodies.
Barrier islands are critically crucial in mitigating ocean swells and different hurricane events for the water systems at the mainland aspect of the barrier island, in addition to defensive the coastline. This efficaciously creates a unique environment of exceedingly low strength, brackish water.
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The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.
