The graph below shows the average monthly change in the prices of three metals during 2014. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line graph compares the average monthly change in the

costs

of three

metals

in 2014.

Overall

, during

this

twelve-month period, the average price of

nickel

was the biggest,

when

Correct word choice

while

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the other two types of

metals

much

Add a missing verb

were much

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less in one year. In February, the average value of the zinc moved upward,

while

the

costs

of

nickel

and copper declined. All metal

costs

kept a downward tendency until June, especially

the

Rephrase

when the

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average value of

nickel

collapsed.

However

, the values of 3

metals

indicated stability until September. After a little decrease, the

costs

of copper and zinc rose,

when

Correct word choice

while

show examples

the price of

nickel

unchanged

Add a missing verb

was unchanged

show examples

. As can be seen from the line graph, the medium prices of 3

metals

fluctuated considerably in 12 months.