Student World Atlas (Maailma atlas)
many for esrs (nearl y 60%) ar e d am aged due ro acidification , po llution,
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10 '
dro ug hr , o r fir es. Overfi shmg-vesp ecial ly 111 rh e North Sea-is a serious
problem for m arine ecos ystems.
So urces: Glob al D'st rib utlOn o f Or lgma l a r'td Remaining Fo res ts.
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