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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.
Nutrient Cycles B1YvM2 1 17. What is the largest reservoir for water on earth? 18. What process contributes to the formation of groundwater? 19. Name two ways in which water is converted to vapor. 20. How does water return to the oceans from the land? 21. Rain, sleet and snow are examples of what? 22.