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.
An earthworm is a segmented burrowing animal that lives in soil, which is a complex mixture of geology and matter, and is an example of an animal, a living organism that is composed of cells.
External reference — all senses of the word “Earthworm” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.
Trace. Question. Emerge.