A) a gradual increase of the temperature of iono sphere
B) gradual loss of biodiversity hot spots
C) gradual reduction in the amount of global direct irradiance at the Earth's surface
D) gradual increase in the melting of ice in polar-region
Correct Answer: C
Solution :
'Global dimming' is the gradual reduction in the amount of global direct irradiance at the Earth's surface that was observed for several decades after the start of systematic measurement in the 1950.
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