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

The linear graph describes the average monthly fluctuations in the values of three

materials

, namely:

copper

,

nickel

, and

zinc

.

Overall

, there are two general trends:

copper

and

nickel

showed a decrease in the graph,

however

,

zinc

rose gradually over the each month in 2014 by percentages. Looking into more detail, the costs of the

materials

decreased dramatically from January to June.

Nickel

described mild fluctuations with around 9% changes, which showed more price changes than the two other

materials

.

Moreover

, the same element showed its lowest point in June,

along with

the

copper

and

zinc

. Interestingly, each of the prices of

materials

showed a steady point between July and September. Afterward,

nickel

and

zinc

illustrated a gradual rise in the middle of autumn, but surprisingly, the cost changes of

copper

decreased at the same time.

Finally

,

at the end

of 2014, each element had mild fluctuations between 1 and 2%.