雨
The rain is falling from clouds of water,land and ocean surface water evaporates into water vapor,water vapor droplets formed on the cloud,they are in the cloud collide with each other,merge into larger droplets,when it is big to air support can not live,from the cloud came down,forming a rain.Rain causes a variety of forms,it also has distinguishing feature each,a drizzle,have without stop rain downpour shower,there are.Rain is human life the most important freshwater resources,plant also rely on rain and grow sturdily.But the floods caused by heavy rains will bring mankind huge disaster.Earth's water under sunlight irradiation,it becomes water vapor is evaporated to the air to.Water vapor in the air meets cold air will condense into droplets.
