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Sir when was agenda 21 signed and how many countries meet at Rio the jenirio |
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Answer» Agenda 21 signed by world leaders in 1992 at the United nations conference on environment and development(UNCED). More than 100 heads of states met in Rio janeiro de Agenda 21 signed by world leaders in 1992 at the United nations conference on environment and development(UNCED). More than 100 heads of states met in Rio janeiro de |
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