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.
The relationships between organisms and their environment are shaped by the complex interactions within the environment, where organisms play a key ecological role.
External reference — all senses of the word “host eco” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.