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What are the effects that IPCC has predicted regarding global warming?

I. Earth's temperature will rise by 1-30°C in next few decades, leading to extreme weather changes (heat waves, hurricanes and severe winters), changes in ocean currents and marine life.

II. If  concentration doubles. Earth's temperature may rise by .

III. The biggest glacier in the Peruvian Andes was retreating by 5 meters per year some 20 years ago; today it is shrinking by 33 meters per year.

IV. The Arctic Sea ice has thinned by 40% in the last two decades, while Mount Everest is losing height at the rate of 1.5 meters per year.

A)  Only I             

B)  I & II

C)  Only III           

D)  All the above