11.   But the dust at the epicenter showed slightly elevated levels of some harmful substances and could harm unprotected rescue workers, particularly those who smoke, they added.

12.   But there is no evidence that ultraviolet light can cause missing legs, Ankley concedes, especially at the only slightly elevated levels found in nature.

13.   Chromium supplements have also been shown to help some people with diabetes reduce their elevated levels of triglycerides, a blood fat that has been linked to heart disease.

14.   Comey said parents who are worried that their child has an elevated lead level can go to a doctor for a blood test.

15.   Crow called the Biosphere a unique facility with untapped potential to study global change, particularly in learning how the Earth might cope with elevated levels of carbon dioxide.

16.   Depression, in his study, carried as grave a risk of heart disease as elevated levels of blood cholesterol.

17.   Elevated lead levels were seven times more prevalent among black children in the inner city than among white children outside cities.

18.   Elevated levels of a variety of air pollutants were detected at various sites in the area, including amounts of benzene three to six times higher than acceptable levels.

19.   Elevated levels of asbestos and lead were recorded in isolated locations in late September in Lower Manhattan, but they have dropped to near-normal levels.

20.   Elevated levels of these fats can increase the risk of a heart attack.