The graph below shows the average monthly change in the prices of three metals during 2014.

The given line chart presents the percentages of average change in price for three types of metals in 2014. As can be seen from the line graph, nickel experienced a drastic downward trend in the first five

months

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, and

then

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grew slowly for the following six

months

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.

In contrast

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, the number

for

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of

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zinc went down for almost eight

months

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during the middle period

,

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apply

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and only showed

increase

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an increase

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for three

months

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.

On the other hand

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, the price for

cooper

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Cooper

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was comparatively stable, it did not experience significant fluctuations. It is evident that the price

for

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of

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nickel was the most expensive of all in January. It went from its peak at 6% in January to its lowest point at -3% in June, and it climbed gradually from -1% in July to 1% in December.

On the contrary

Linking Words

, the number of

cooper

Change to a plural noun

coopers

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was quite constant. It dropped from 2% in January to a low of -0.5% in March, rising to 1% in a month, and remained steady for the next four

months

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, and grew back to 2% in December.