Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
Water is a transparent, tasteless, odorless liquid composed of hydrogen and oxygen molecules, essential for all known forms of life, which is a fundamental property of substances.
External reference — all senses of the word “water” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.
Trace. Question. Emerge.