31.   European beech trees have lustrous green leaves in summer.

32.   Even fake trees have to be found, and fluffed, a time-consuming chore.

33.   Few trees have had as remarkable a presence and impact on the American landscape and ecosystem.

34.   I wonder about the deeper dimension of their partnership, whether each tree has a sense of the other.

35.   I did not realize that apple trees had so many pest problems, especially in the Northeast.

36.   If your tree has a broken limb, you may be able to save the tree by cutting the branch away.

37.   Instead, the tree has a profusion of branches of uncertain relationships, false starts and dead ends.

38.   Most trees have a top section that fits down into the pole that holds the branches.

39.   Nonetheless, the trees may have some of the same potential applications, if they can be produced on a commercial scale.

40.   Old trees have rougher bark.