Fact 1: Clouds are formed by water vapor rising into colder regions of the atmosphere and condensing. Fact 2: This water evaporates into water vapor and rises up into the atmosphere. Given the two facts above, answer the question "what process must occur to form clouds?" with the following options: - thunderstorms - Movement of an air mass - evaporation - nimbus - snow - water evaporating - chemical changes - cloudy and rainy weather
water evaporating