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air+fire=energy

earth+water=mud

energy+mud=life

life+mud=bacteria

bacteria+earth=worm

worm+earth=animals

bacteria+water=plankton

plankton+earth=plant

air+worm=bird

water+magma=rock, steam

rock+fire=metal

metal+fire=steel

animals+plants=nature

animals+nature=evolution

animal+evolution=human

human+human=family

family+family=village

village+village=city

city+city=country

country+country=world

human+rock=tool

steel+tool=weapon

human+weapon=hunting

plants+tools=wood

steam+wood=paper

bird+hunting=pen

paper+pen=book

book+human=science

animals+science=Biology

science+nature=physics

bacteria+biology=reaction

reaction+physics=nuclear reaction

nuclear reaction+weapon=nuclear weapon

nuclear weapon+world=the end

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13y ago

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