11.   They retreated behind trees for safety.

12.   Nevertheless, protein trees could be as misleading as rRNA trees for very distantly related organisms.

13.   They stood beneath the trees for a while watching the game.

14.   Are the trees just for for Sherwood Forest?

15.   Dormice spend much of the summer living in the treetops, and depend on a richly-interlaced canopy, with hollow trees for hibernation.

16.   On hearing this, the king gave orders for the fields around his castle to be planted with almond trees for as far as the eye could see.

17.   The team from Oxfam found desperate refugees cutting down trees for fuel.

18.   The women did everything the forestry men had done before them, including felling trees for telegraph poles and pitprops.

19.   Slowly they moved on up the slope, using the trees for protection, watching and listening until they had reached the top, and open ground.

20.   Finally all gathered round the tree for prayers.