She was like the key to their lock. which means without her they would have died sooner.
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Answer:
Earthquakes along the San Andreas fault zone, for example, are repetitive—they reoccur in roughly the same regions over and over again—separated by decades or centuries because stress continues to build up all the time and when it is great enough to overcome friction there will be an earthquake and then the process will start over again
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Answer:
Two years of occurrence or three years of discovery, whichever occurs first
Explanation: