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What a great use of dominoes as a metaphor for the timeline of our universe by science educator Kurtis Baute from Vancouver, Canada.
Definitions: Eukaryote: characterized by well-defined cells (with nuclei and cell walls).
Prokaryote: a unicellular organism that lacks a membrane-bound nucleus. From Greek (pro) "before" and (karyon) "kernel".
Mitochondria: a small spherical or rodlike body, bounded by a double membrane, found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. From Greek (mitos) "thread" and (khondrion) "little granule"
Pangaea: a supercontinent that included all current land masses, believed to have been in existence before the continents broke apart.

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