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2015-01-17T21:24:53+08:00

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Ang mga dahilan ng pandarayuhan ay:
1.Emmigrasyon-nakadaragdag ns pandarayuhan papasok na pandarayuhan.
2.Immigrasyon-nakababawas na pandarayuhan palabas na pandarayuhan.
Mga dahilan;
1.Mababawasan ang populasyon o uunti.
2.daragdag ang populasyon o tataas.
Hope it helps.:D.
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