560 million years ago: “Proto-animals” were the first multi-cellular organisms. Proto-animals looked like plants. It had soft cell walls and absorbed its nutrients directly through its large surface area without ths and guts. However, their simple and effective fractal cellular division meant that they could not adapt and thus failed.
100 million years later, animals started to move and they had modern body arrangements. They reproduced (550 million) and this enabled adaptation through genetic variation. Soon some animals developed predatory mouths and hunters in the oceans (for the first time) had enormous evolutionary consequences.
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