For example, the U.S. Geological Survey does not have complete groundwater mapping data and, at current funding levels, may not obtain it for decades.

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John Warner, R-Virginia, noted that the survey group's work was not complete.

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Not only were Zs more likely to complete the survey but they did so more quickly than did the As.

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The survey will take another five months, but Dr Walsh insisted that when complete, it will not merely sit on a shelf.

BBC: Tony Gallagher