Answer:The quality or state of being volcanic; volcanic activity. ... The level of power of a volcano.
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Answer:
All safety, quality and other specifications and standards applicable to any Product, including all medical devices and other standards promulgated by Standard Bodies.
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<span>Sinkholes, especially like the one that occurred in Mexico City, are often sign that the water reservoir is being depleted. Usually, the water underneath the ground helps stabilize it, however if there is suddenly open space or a cavern, it can collapse on its self causing a sink hole. This could also happen from fracking and drilling.</span>
<span>Magma that reaches the surface is referred to as lava.</span>