A couple two tree - Used to explain an amount of anything.

We use trees as a focal point around which other environmental issues are brought to attention.

The most known trees are used by the timber industry.

The tree is often used to represent nature or the environment itself.

The most known trees are used by the timber industry, more than 14 species.

The tree can be used in the control of erosion.

The tree is used as a source of water and food for indigenous people.

Behind the building they used trees to seal off the area completely.

The dead trees had long since been cut up and used for firewood.

The tree has a very pleasing shape and was used in a car commercial.