Unformatted text preview: deposited in ocean Wave actions erodes the deposits creating low cliffs. Forms cliffs and narrow beaches Coral reef: rock-like accumulation of carbonates secreted by corals and algae in shallow water along a marine shoreline • New land is made by organisms • Warm tropical and equatorial waters • Coral needs warm, clean water, good aeration • Reefs exposed at low tide, covered at high tide Coral bleaching: warm water temperatures force corals to expel the algae that live inside the coral structure • Algae necessary for coral survival • Corals can recover from temporary heat stress and bleaching • Permanent increase in water temperature can cause coral death • Global warming threatens coral reef survival • Increased CO2 in ocean impedes growth of coral structure Barrier reefs : separated from mainland by a lagoon Barrier reefs develop as the islands erode and subsides....
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- Spring '10
- Geography, Coast, Coastal geography, Coastal and oceanic landforms, Barrier island