Although atmospheric pressure can only make water rise by about 1m, trees absorb water to keep growing because of capillary phenomenon in the internal structure of trees. Generally, trees are only a few meters high, but their roots are very developed, reaching a depth of several meters or even tens of meters below the ground. Trees absorb water from the ground through their very developed roots, and at the same time, because there are many tiny gaps or holes between underground soils, capillary rise of water can be realized. There is also the function of groundwater, so trees can absorb water and nutrients. There is also a capillary rising phenomenon between the branches of trees on the surface and the plant fibers inside them. In this way, water will be continuously transported from underground to trees. Even if trees are very tall, some even exceed 1 meters, trees can still absorb water from underground.