GMAT Verbal Reasoning Practice Test 6

Question : 89 of 100

Marks: +1, -0

Weather forecasts are more detailed today than they were 36 years ago.
Scientists can establish that sunspot activity directly affects the Earth’s weather.
Evidence other than sunspot activity has previously enabled meteorologists to forecast the weather conditions that are predictable on the basis of sunspot activity.
Scientists have not determined why the sunspot activity on the Sun follows an 11-year cycle.
It has been established that predictable wind patterns yield predictable weather patterns.

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