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IELTS Free Online Writing Practice - The Impact of Air Pollution on Human Health

IELTS.WORK Free Online Writing Practice # 1710999222

Topic: The Impact of Air Pollution on Human Health

In this task, you are required to discuss the impact of air pollution on human health. You should provide relevant facts and arguments to support your discussion. Your response will be marked on the criteria including:

- Task Response (TR): How fully the candidate has addressed or recognized the task.
- Coherence and Cohesion (CC): The logical progression of ideas, and the use of cohesive devices to connect ideas within and across sentences.
- Lexical Resource (LR): The range and accuracy of vocabulary used, including appropriate word choices, idiomatic usage, and accurate grammar.
- Grammatical Range and Accuracy (GA): The candidate's overall control of grammar, including tense usage, subject-verb agreement, etc., and the use of a wide variety of sentence structures.

Model Answer:

Air pollution has become one of the most pressing environmental issues in recent years, affecting not only the natural environment but also human health significantly. This essay will examine the impact of air pollution on human health by discussing its sources, types, and related health effects.

The primary sources of air pollution include industrial emissions, motor vehicle exhausts, and biomass burning. These pollutants are primarily composed of particulate matter (PM), nitrogen dioxide (NO2), sulfur dioxide (SO2), carbon monoxide (CO), and ground-level ozone (O3). The adverse health effects of air pollution range from respiratory issues to cardiovascular diseases, and even cognitive decline in children.

Firstly, PM, a significant contributor to air pollution, has been associated with various respiratory illnesses. For instance, the World Health Organization (WHO) reported that long-term exposure to PM2.5 (fine particulate matter) can lead to chronic obstructive pulmonary disease (COPD) and lung cancer. Additionally, NO2, a component of photochemical smog, has been implicated in the exacerbation of asthma and other respiratory conditions.

Secondly, SO2 and CO are known to contribute to cardiovascular diseases. Elevated levels of SO2 can lead to systemic inflammation, which in turn increases the risk of hypertension and stroke. Similarly, high concentrations of CO reduce the oxygen-carrying capacity of the blood, leading to heart issues such as myocardial infarction and heart failure.

Lastly, ground-level ozone has been linked to cognitive decline in children, particularly those with pre-existing respiratory conditions. Studies have shown that exposure to high levels of O3 can impair memory, attention, and learning abilities in young individuals.

In conclusion, air pollution has far-reaching implications for human health, ranging from respiratory problems to cardiovascular diseases and cognitive decline in children. Governments and industries should invest in cleaner energy sources, stricter emission regulations, and public awareness campaigns to mitigate the impact of air pollution on human health.

Overall, the answer is well-structured, coherent, and logical, with accurate grammar and a wide range of sentence structures. The lexical resource is appropriate for the context, and the candidate has demonstrated a good understanding of the topic, demonstrating a comprehensive response to the task requirements:

Task Response (TR): Excellent
Coherence and Cohesion (CC): Excellent
Lexical Resource (LR): Good
Grammatical Range and Accuracy (GA): Excellent

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