The graphs show the percentage frequency distribution of stations (on the y-axis) in the EU Member States versus the various concentration classes (on the x-axis, in µg/m3). Vertical lines correspond to target or threshold values set by the EU legislation.
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Certain non-recyclable paper products (such as tissues, napkins, and egg cartons) can be added to your compost. Their fibres will aerate the compost and help the organisms that encourage decomposition.
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