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OpenStudy (anonymous):

how did irrigation lead to food surplus?

OpenStudy (rina.r):

this will help u! http://answers.yahoo.com/question/index?qid=20060926202712AAhb1bI

OpenStudy (anonymous):

Thank you so much!!!

OpenStudy (rose21):

lol same link @LAKERNATION24

OpenStudy (anonymous):

i know lmao questions like this i just look it up

OpenStudy (rose21):

me too lol google is my best friend

OpenStudy (anonymous):

lol

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