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.
Fossil remains are the preserved remnants of past organisms, which occur over vast periods of time, requiring an understanding of life and its progression through the passage of time.
External reference — all senses of the word “Fossil Remains” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.