The earth has been around for 4.543 billion years. The universe has been around for 14 billion years. Last common ancestor of humans and gorillas lived 10 million years ago. Emergence occurs when putting things in perspective.
Drag events into their proper place on the timeline to learn new things and to beat the game.
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Events timeline on android
You can play a demo for Events timeline on android from Google play, at Play.google.com