IELTS Writing Task 1 Sample Answer
IELTS
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78. The diagram below shows nitrogen sources and concentration levels in the groundwater of a coastal city.
Summarize the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
The diagram below shows nitrogen sources and concentration levels in the groundwater of a coastal city.
Sample Answer 1
The diagram illustrates the sources of nitrogen and its concentration in the groundwater of a coastal city.
Overall, nitrogen enters the groundwater through various mechanisms and is subsequently transported to the sea, where it undergoes oxidation by lightning or fixation in the ground through plants and rainfall. This cycle then repeats.
IELTS Speaking
Part-1 Practice
Notably, there are several man-made sources of nitrogen. One source is gardens, where fertilizers and household liquids seep into the soil. Another source is industry, where nitrogen leaks from storage tanks. Lastly, nitrogen can enter the groundwater through trash disposal in landfills. These three sources contribute to extremely high nitrogen concentrations.
The groundwater naturally flows towards the sea and is discharged into it. Along the way, some nitrogen is absorbed by soil particles, while some is released near the coast through natural denitrification. Nitrogen levels tend to decrease towards the saltwater interface and between areas with high nitrogen concentrations caused by industry and waste dumping.
Key vocabulary and phrases:
illustrates
sources
concentration
groundwater
coastal city
enters
mechanisms
transported
oxidation
fixation
man-made sources
seep into
storage tanks
trash disposal
contribute to
extremely high
discharged
absorbed
released
denitrification
levels tend to decrease
saltwater interface
IELTS Speaking
Part-1 Practice
The diagram below shows nitrogen sources and concentration levels in the groundwater of a coastal city.
Sample Answer 2
Band 7+
The diagram depicts the source of nitrogen and the extent to which it is concentrated in the groundwater of a coastal city. Overall, we can see that nitrogen enters groundwater via a variety of mechanisms and is subsequently carried to the sea, where it is oxidised by lightning or fixed in the ground by plants and rains. Following that, the cycle is repeated.
Notably, there are numerous man-made sources of nitrogen. One is gardens, where fertilisers and household liquids seep into the earth, and the other is industry, where nitrogen leaks from stalon tanks. Finally, trash disposal in landfills may result in an increase in nitrogen entering the groundwater. Nitrogen concentrations are extremely high in these three places.
The groundwater naturally flows toward the sea and is dumped into it. Some nitrogen is absorbed by soil particles along the route, while some is released near the coast by natural denitrification. Levels tend to fall towards the saltwater interface and between areas of high nitrogen concentration caused by industry and waste dumping.
171 Words