I nte r nati o nal e n g LI s h lan g uag e testi n g syste m

The world’s air pollution levels are rising year on year. What are the most 

pressing causes and effects of this disturbing trend?

Increasing levels of airborne pollutants have proved to be a major obstacle for 

humanity in the 21st century. This trend has several major causes, but the world’s 

increasing demand for coal-based energy and fossil fuels are thought to be the main 

precursors to larger human problems. These triggers and the effects rising rates of 

atmospheric pollution have on the planet will be examined in this essay.

Most experts agree that a very large amount of airborne pollution is caused by cit-

ies that require coal for energy, a problem that is swelling exponentially on account 

of several rapidly growing economies. For example, the affluence of more than two 

billion people between India and China has been rising for decades, and with this

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IELTS Academic Task 2: How to write at a band 9 level

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