21.   Scientists say it has killed stunted trees in New Hampshire, damaged evergreens in Colorado and helped deteriorate Civil War monuments at Gettysburg, Pa.

22.   Scientists suspected that some sort of fungi were killing stressed trees.

23.   She did not like to use too much paper because it meant killing trees.

24.   Some people complained that the practice risked killing the tree, although BellSouth has received no complaints of having done so.

25.   Such heavy cutting can kill a tree.

26.   That kills native trees that normally survive by keeping their leaves high above the flames.

27.   That rescue worsened floods in the central Everglades, including tribal land, killing trees and ruining crops for the sacred Green Corn Dance.

28.   The birch bark is peeled before the sap rises, Gaydos said, so that he does not kill the tree.

29.   The creature is the Asian long-horned beetle, which kills trees by eating them from the inside and which has no natural enemies in the United States.

30.   The high water has lasted so long that it is starting to kill trees, drowning their roots.