(1) Although almost all climate scientists agree that the Earth is gradually warming,they have long

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Question : (1) Although almost all climate scientists agree that the Earth is gradually warming,they have long been of two minds about the process of rapid climate shifts within larger periods of change.Some have speculated that the process works like a giant oven or freezer,warming or cooling the whole planet at the same time.Others think that shifts occur on opposing schedules in the Northern and Southern Hemispheres,like exaggerated seasons.Recent reserach in Germany examining climate patterns in the Southern Hemisphere at the end of the last Ice Age strengthens the idea that warming and cooling occurs at alternate times in the two hemispheres.A more definitive answer to this debate will allow scientists to better predict when and how quickly the next climate shift will happen.
A	A. Scientists have been unsure whether rapid shifts in the Earth's climate happen all at once or on opposing scheules in different hemispheres;reserach will help find a definitive answer and better predict climate shifts in future.
B	B. Scientists have been unsure whether rapid shifts in the Earth's climate happen all at once or on opposing schedules in different hemispheres;finding a definitive answer will help them better predict climate shifts in future.
C	C. Research in Germany will help scientists find a definitive answer about warming and cooling of the Earth and predict climate shifts in the future in a better manner.
D	D. More reserach rather than debates on warming or cooling of the Earth and exaggerated seasons in its hemispheres will help scientists in Germany predict climate changes better in future.
	Answer:B
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