Academic Writing Task 1

The bar chart illustrates the proportion of individuals across six age groups who attended music concerts in 2010 and in 2015.

Overall, concert attendance rose across every age group over the five-year period. Younger age groups consistently recorded the highest attendance in both years, while the most striking proportional increases were seen among the two oldest groups.

In both years, the 16–24 age group had the highest attendance, rising from 40% in 2010 to 50% in 2015. The 25–34 group followed a similar upward trend, increasing from 30% to 35%. Attendance in the 35–44 and 45–54 groups also grew moderately — from 25% to 30% and from 20% to 25% respectively — meaning all four younger cohorts saw a rise of 5–10 percentage points.

By contrast, the two oldest groups experienced far more dramatic relative gains. Attendance among 55–64 year-olds doubled from 10% to 20%, while the 65+ group saw an even more notable rise, tripling from just 5% to 15%. Despite these significant increases, older age groups still attended far less frequently than younger people, with the 65+ figure in 2015 (15%) remaining lower than the 35–44 figure in 2010 (25%).

The pie chart illustrates the proportion of different energy sources used to generate electricity in a country in 2022.

Overall, coal was the most significant contributor to electricity generation, accounting for 35% of the total energy supply. This was closely followed by natural gas, which made up 30% of the energy mix. Together, these two non-renewable sources represented a substantial 65% of the country's electricity production.

Nuclear energy was the third-largest contributor, providing 20% of the total. While it is not a fossil fuel, it still plays a critical role in the country's energy strategy. Renewable sources, including solar, wind, and hydroelectric power, contributed 10% of the total energy output. Despite growing global awareness of renewable energy, this percentage remains relatively small compared to non-renewable sources.

Finally, other energy sources not specified in the chart made up just 5% of the electricity generation, indicating that less conventional sources had a minor impact on overall production.

The line graph illustrates the number of international students studying in three different countries — Country A, Country B, and Country C — over a ten-year period from 2010 to 2020.

Overall, the number of international students increased in all three countries, although at different rates. Country A experienced a steady and consistent rise, while Country B's numbers fluctuated slightly throughout the period. Country C saw a rapid increase in the first few years, which then levelled off toward the end of the period.

In 2010, the number of international students in all three countries started at around the same level — approximately 20,000. However, by 2020, the number in Country A had risen steadily to reach around 80,000. Country B's figures showed fluctuations, rising to about 50,000 by 2015, dropping slightly in 2017, and then reaching 60,000 by 2020.

Country C experienced a sharp increase from 20,000 to about 70,000 between 2010 and 2015, after which the number plateaued and remained at around the same level until 2020. Despite all three beginning at the same point, Country A ultimately recorded the highest number of students by 2020, narrowly ahead of Country C.

The table presents data on the average weekly working hours and annual salaries for five professions in a European country in 2023.

Overall, lawyers earned the highest salaries but also worked the longest hours, while chefs worked comparably long hours for significantly lower pay. Teachers worked the fewest hours per week, though their salary was mid-range among the professions listed.

In terms of earnings, lawyers received the highest annual salary at €95,000, followed by software engineers at €78,000. Teachers earned €42,000 per year, placing them in the middle of the salary range. Nurses received €36,000, while chefs earned the least at just €28,000.

Regarding working hours, lawyers also topped the list at 52 hours per week, closely followed by chefs at 50 hours. Software engineers worked 42 hours per week, and nurses worked 38 hours. Teachers had the shortest working week at 35 hours. Notably, chefs worked almost as many hours as lawyers but earned less than a third of the lawyer's salary, highlighting a striking disparity between hours worked and financial compensation across these professions.

The diagram illustrates the six-stage process through which wastewater is treated and made safe for release or reuse, along with the handling of two by-products generated during the process.

Overall, the treatment cycle moves from raw sewage collection through progressively more refined purification stages before producing clean water, with useful materials extracted at two intermediate points.

The process begins with the collection of wastewater from sewers and drains, which is then transported to a treatment facility. In the second stage, screening removes large solid objects from the water. The water then undergoes sedimentation in step three, during which smaller solid particles sink to the bottom and form sludge. This sludge is removed, dried, and converted into agricultural fertiliser — one of the two main by-products of the process.

In step four, biological treatment uses microorganisms to break down organic matter in the water. This stage produces biogas, which is captured and used to generate electricity, thus making the process partially self-sustaining. The partially treated water then passes through disinfection in step five, where chlorine or ultraviolet light eliminates remaining pathogens. Finally, in step six, the clean water is either released into the environment or recycled for reuse.

The two maps illustrate how the layout of Riverside town centre changed between 2000 and 2024.

Overall, the town underwent significant redevelopment over this period, with a clear shift from industrial and underused spaces toward residential, commercial, and recreational facilities.

The most striking change in the northern part of the town was the demolition of the factory in the top-left area, which was replaced by a residential housing complex. The open car park in the centre of this zone was upgraded to a multi-storey car park, presumably to accommodate the higher population density. The outdoor market in the top-right corner was also removed to make way for a large enclosed shopping centre.

In the southern part of the town, the small local shops along the High Street were retained but renovated. The High Street itself was pedestrianised by 2024, suggesting an effort to reduce traffic and improve the area for pedestrians. Most notably, the large area of empty land that had occupied the south-central and south-eastern portions of the town in 2000 was transformed into a public park, providing residents with a green recreational space.