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Question: What are the two things that make up a cloud?

Answer: It's hard to know exactly what you might mean by "things" in this question. If one had to reduce a cloud to two physical components, perhaps you could say clouds are, at their most basic, made up of water and cloud condensation nuclei, as typical clouds in the atmosphere are composed of water droplets or ice crystals, and the tiny particulates of various kinds that can serve as nucleation points upon which the water can condense (as a liquid droplet) or deposit (as an ice crystal) given the correct combination of humidity, temperature and in some cases vertical motion.

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