So we have failed and there is no good reason to believe that trees exist outside of the mind.

A tree does not exist just for economic gain.

It was as though the tree did not exist.

It is said that Gojoseon was founded at the place where many birch trees existed.

Schrenk's spruce is an important tree in central Asia for timber and paper production, where few other large trees exist.

Whether trees existed here 150 years ago is beside the point.

Though trees do exist in the region, they are dwarfed and extremely sparse.

It is possible that trees of this species may only exist, if planted by man.

Also, people may also say, if the tree exists outside of perception (as common sense would dictate), then it will produce sound waves.

He could see that box after box meant for trees existed now only to support litter.