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The supplied line graph highlights with regard to the percentage of four various items which were incurred recycling processes throughout the period from the years of 1980 to 2010 in a determined habitat. Over the course of the conducted research, it can be spotted that the most proportion of recycling materials consists of

paper

and cardboard. At the beginning of the survey a detailed look affords to evaluate that approximately 65% of listed above items underwent recycling. At the same time, 50% of the recycling rate in the research region (activity/sphere may be??) belongs to

glass

containers. Even so, during the

first

decade the figures on these materials have altered the tendency: the percentage of recycling

paper

has spiked to 70% by the middle of 1980s and returned to the initial level; the proportion of

glass

has decreased gradually to 40% over

this

time. During the

next

decade, the figures on

glass

containers and

paper

or cardboard have risen. After that, the percentage in both types of materials has changed the tendency: recycling rates for

paper

and

glass

containers have been dwindling and increasing respectively by the end of the survey period.

Also

noteworthy is that the significant surge in breakdown of recycling rate for aluminum cans from slightly more than 0% to just over 40%.

However

, according to the line graph, plastics were not in demand in the recycling process and the figures have risen little below 10% for the three decades.