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The water cycle is critical not only to weather, but to life on earth. Rain is necessary for the survival of plants and humans. Condensation is necessary for cloud formation. Evaporation is necessary to cooling and keeping a good balance of water vapor in the air.
The lithosphere is important to the hydrological cycle because without it infiltration won't happen in the earths crust and therefore will cause surface storage and then surface runoff which will then cause flooding in the river because the water will get back faster than going all the way underground to the water table and then going into the river ...