1.   A tree without leaves has a smaller surface area as compared with a tree with leaves which has a large surface area.

2.   So the pine tree has to produce pollen in gigantic quantities.

3.   Some trees have so much native scent that a single specimen can evoke whole forests.

4.   The tree has a milky sap.

5.   Several trees had to be cut down before the building work could start.

6.   The trees have all shed their leaves.

7.   The tree has a conical shape.

8.   Elm trees have shallow roots.

9.   The tree had a stout branch, and I found the boy perched there on his hunkers.