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The image shows changes in average monthly prices of three metals in 2014: Copper dropped from +1% in January to -2% in February, fluctuated between -3% to 0% from March to August, slightly recovering to -1% by November before ending at -2% in December; Nickel fell from 6% in January to -3% in February, sharply decreased to -6% in March, reached lowest at -8% in April, then slightly improved from -8% in May to -6% in October, and ended at +1% in December; Zinc started at +3% in January, then evenly declined to -2% in February, fluctuated narrowly between -1% and 0% from March to October, and rose to +1% by November, closing the year near 0% in December.
Given the complexity of the image, the above description may not be entirely accurate.
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The chart represents the average monthly change in the prices of 3 mentals in the year 2014, and the 3 elements are separately copper, nickel and zinc.
The chart can mainly be divided into 3 seasons, which are separately January to June, June to September and October to December. For the first season, January to June, average prices of copper and nickel show decreasing trends while zinc goes up first and goes down. As for the second season, June to September, the prices of all metals increase first and keep in freeze. In final seasons, prices of three elements drop first and rise until the end of 2014.
To conclude, in the first season, all prices decrease continuously except zinc. Three prices rise first and stay the same level for 2 months. In the third season, the prices of 3 metals show growing trends from October to December.
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