21.   Eric Evenson, district chief of the U.S. Geological Survey, said that there were several factors contributing to the elevated levels in the aquifer in southern New Jersey.

22.   Elevated levels of testosterone also enable athletes to work out harder and recover more quickly.

23.   For instance, researchers have barely begun studying whether elevated levels of dioxin and other contaminants could explain the low reproductive rates of Maine bald eagles.

24.   Government inspectors last month found poultry feed from a Mississippi plant contained elevated levels of dioxin, which is suspected of causing cancer.

25.   Giuliani said he took the test twice, and it confirmed an elevated P.S.A. level.

26.   Greenspan told lawmakers that he was not concerned about chronically elevated levels of unemployment, and that he expected hiring to pick up as the economy recovered.

27.   He had been favored, and a sense of failure, even at this elevated Olympian level, seemed to encompass him.

28.   However, Archer said elevated levels of harmful bacteria from floodwater pouring into the coastal waters could delay the start of the seasons in some areas.

29.   I assume that Supreme Court justices, as custodians of the Constitution, operate on an elevated philosophical level and with wattage that is unavailable to mere mortals.

30.   In nondiabetics with suspected blockages of a coronary artery, elevated levels were associated with about a doubled increase of heart disease, the AHA reported in February.