Eutrophication, pollution and extraction of groundwater and surface water in and around wetlands are still matters of great concern in the Netherlands, although a significant downward trend in the input of most harmful heavy metals and nutrients into wetland ecosystems has been achieved.
(Eutrophication, pollution and extraction of groundwater and surface water in and around wetlands; are; T:still; matters of great concern in the Netherlands) (a significant downward trend in the input of most harmful heavy metals and nutrients into wetland ecosystems; has been achieved; )
Eutrophication, pollution and extraction of groundwater and surface water in and around wetlands a significant downward trend in the input of most harmful heavy metals and nutrients into wetland ecosystems
are has been achieved
T:still matters of great concern in the Netherlands