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Why are data of many years used in climate study?

Answer and explanation

Correct answer: To identify the normal trend

The direct answer is option A: many years of data are used to identify the normal trend. Climate means the usual pattern of weather over a long period, while weather can change from day to day. Step by step: collect temperature, rainfall, wind or other records for many years; compare the records; find repeated or average patterns; then describe the normal climate of the place. Option A is correct because a long record reveals the usual trend more reliably than one observation. Option B is wrong because climate data do not hide a day's weather; they place daily changes in a longer context. Option C is unrelated to climate study and cannot change a river's name. Option D is impossible because recording data cannot stop rainfall. Memory cue: climate means long-term pattern, weather means short-term condition.

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GeographyClimateData

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