Why water move to the top of a tall tree?

Water moves to the top of a tall tree primarily through a process called transpiration, where water evaporates from the leaves, creating a negative pressure that pulls more water upward from the roots through the xylem vessels. This movement is facilitated by cohesion and adhesion properties of water molecules, allowing them to stick together and to the walls of the xylem. Additionally, the root system absorbs water from the soil, maintaining a continuous supply for this upward flow. Together, these processes enable trees to transport water efficiently over great heights.