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പരിസ്ഥിതി പ്രശ്നങ്ങൾ
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The most potent greenhouse gas in terms of efficiency is?
A
N2O
B
C20
C
CFC
D
CH4
Answer:
C. CFC
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ഓസോൺപാളിയുടെ നാശത്തിനുകാരണമാകുന്ന വാതകം ഏതാണ്?
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