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UPPSC Prelims 2023GS-IQ. 132 of 250
Q. 1321 markMedium
UPPSC Prelims 2023·GS-I
The “Agenda-21” of Rio Summit, 1992 is related to –
(a)Sustainable development
(b)Polluter – Pays principle
(c)Environmental education
(d)Preservation of ozone layer