IELTS Writing Task 2
“Nitrogen Concentration in
Groundwater”
The diagram shows nitrogen
sources and concentration levels in the ground water of a coastal city.
Summarize the information by
selecting and reporting main features.
Write at least 150 Words
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The diagram shows sources of
nitrogen and its concentration levels in the groundwater of a coastal city. Different levels of nitrogen concentration
have been indicated with the help of colour density here in the diagram. The diagram also shows the saltwater
interface.
The water from different
sources enters the land and creates a land fill. Those sources are waste
disposal, Leaks from storage tanks and waste water ponds of industries, Household
liquid waste, Fertilizers and Coastal vegetation. With the coastal vegetation,
the process of nitrogen fixation has also been shown in the diagram. In the rainwater, nitrogen oxidation takes
place due to lightning. All this water entering the soil creates a water table
in the earth as indicated in the diagram (top). Ammonia degassing and Nitrate
uptake by soil particles are also indicated. The diagram also indicates with
the help of arrows, the direction of flow of groundwater that reaches groundwater
discharge zone and finally migrates into the ocean.
(159 Words)
