41.   There are several tests you can apply to find out how old a tree is.

42.   There was no wind and the trees were completely still.

43.   There were a few trees edging the pavement, but they were an urban stock, twisted and stunted by city poisons.

44.   There were old rose trees everywhere, and the walls were covered with climbing roses.

45.   Thick white branches arch as far out as the tree is tall, sometimes at seemingly impossible angles.

46.   This relative of the dogwood family, whose trees are well known farther south, here creeps along just under the soil.

47.   Trees are a renewable resource that when managed properly can sustain our needs indefinitely.

48.   Trees are a renewable resource.

49.   Trees are sparse in this part of the world because of the continuous wind that blows across the plains.

50.   When some mice found the garret, the fir tree was happy for the company.