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Travelocity's initial strategy was to concentrate on airline ticketing,hotel booking,and selling advertisements on its Web site.This business model worked very well until the airlines eliminated travel agents' commissions and competitors entered the market successfully.
Composite Volcanoes
Volcanoes characterized by explosive eruptions and composed of alternating layers of lava flows and pyroclastic materials.
Pyroclastic Flows
Fast-moving currents of hot gas and volcanic materials that flow down the slopes of a volcano during an explosive eruption.
Caldera Collapse
The sinking of a volcano's summit, forming a large, bowl-shaped depression, typically following the emptying of the magma chamber in a major eruption.
Dome Formation
The upward bulging of the earth's surface to form a dome, often due to magma pushing upwards.
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