Earth’s water cycle shows the interactions among biosphere, lithosphere, atmosphere, and the hydrosphere because it moves from one sphere to another.
Water present in the hydrosphere can evaporate and this water become part of the atmosphere. Through precipitation, water in the atmosphere comes back to the hydrosphere or percolate into the ground to become groundwater which become the part of the geosphere.
This water is used by vegetation and other organisms which are the part of biosphere so we can conclude that water cycle connects the four earth systems.
Learn more about water cycle here: https://brainly.com/question/5187046