The international treaty Paris Agreement deals with :
AClimate change
BWater conservation
CConservation of biosphere reserves
DOzone depletion
AClimate change
BWater conservation
CConservation of biosphere reserves
DOzone depletion
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ഇവയിൽ അലോഹ ധാതുവിന് ഉദാഹരണങ്ങൾ ഏതെല്ലാമാണ് ?