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UPPSC Prelims 2020GS-IQ. 83 of 221
Q. 831 markMedium
UPPSC Prelims 2020·GS-I
Without greenhouse effect, the average temperature of earth surface would be
(a)0 °C
(b)−18 °C
(c)5 °C
(d)−20 °C
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Without greenhouse effect, the average temperature of earth surface would be