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

The line chart illustrates the

fluctuation

Replace the word

fluctuating

show examples

prices per month of

copper

Use synonyms

,

nickel

Use synonyms

, and zink from

January

Use synonyms

to December 2014. Units are measured in percentage (%).

Overall

Linking Words

, it can be seen that the change fee of

nickel

Use synonyms

was the most rose and fell.

Also

Linking Words

, all metals' starting points were different,

while

Linking Words

they hit relatively the same proportion

at the end

Linking Words

of the year.

Copper

Use synonyms

, zinc, and

nickel

Use synonyms

had a similar trend that went down

first,

Linking Words

after

January

Use synonyms

, and went up until July. The

copper

Use synonyms

started at 2% in

January

Use synonyms

and decreased to half of it in July. The zink was at 1% in

January

Use synonyms

and became below 0% but above -1%.

In contrast

Linking Words

,

nickel

Use synonyms

has the highest change cost, at 6%, in

January

Use synonyms

. After that, the cost decreased gradually until April, at 1%.

Then

Linking Words

jumped dramatically to -1% in July.

On the other hand

Linking Words

, the three metals increased gradually from July to December.

copper

Use synonyms

climbed up for almost twice its proportion.

Moreover

Linking Words

, zinc and

nickel

Use synonyms

rose sharply from negative rates to

at

Change preposition

apply

show examples

2% and 1% respectively. In the final period, in December, zinc was the main material that had many changes, followed by

copper

Use synonyms

and

nickel

Use synonyms

.