The benefit of a tree for humans are known to us due to climate change.
We need an appropriate location perspective to ensure continued existence. Spruce, die of thirst as flat roots, are infested by the bark beetle. The poplars and beech dry up, bacteria are affected. These bacteria are shown in the dried wood of a poplar disc.
In the picture of the collage we see a cross-section of the poplar with the branches, in the direction towards the treetop.