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After this time , the larvae transform into air breathing sub-adults measuring between four and five inches , and leave the ponds at night during wet weather to begin their underground existence . The focus of archaeological investigation is shifting from generalizations about societies for comparative theory-building to the internal dynamics of societies . " [ a ] case which has proceeded upon sufficient proof to that stage where it will support finding if evidence to contrary is disregarded . Many of these employees rely on mobile technology to maximize their effectiveness and document their activities . They range from humanitarian assistance to disaster relief to the trafficking in people to counterdrugs to terrorism .