These broad ecosystem‑types represent different ways of clustering CLC units, so there are overlaps between them. For
instance, 'grasslands' and part of 'heaths and scrubs' are included in 'agro-ecosystems'. Similarly, 'lakes and rivers' are
included in 'wetlands'. This is why the sum of the ecosystems is over 100 %.
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The recommended temperature for a refrigerator is between 1 – 4 °C
and for the freezer it should be set at -18 °C. Each degree below these temperatures makes no difference as to how well the food is preserved, but it does increase energy consumption by approximately five per cent. Place a thermometer in the refrigerator and the freezer to check the temperature!
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