All of the listed factors can contribute to environmental challenges in South Asia, but if you are looking for the most relevant factors specific to the region, the following two are particularly significant:
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Drought from low rainfall – South Asia experiences significant variability in rainfall, leading to drought conditions in some areas, which can adversely affect agriculture and water resources.
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Pollution from motor vehicle exhaust – Urban areas in South Asia often face severe air pollution due to vehicle emissions, industrial discharges, and other factors, leading to serious health and environmental issues.
While earthquakes and volcanic eruptions can also cause destruction and environmental challenges, they are less frequent and more localized compared to the ongoing issues of drought and pollution.
Therefore, the most relevant correct answers would likely be drought from low rainfall and pollution from motor vehicle exhaust.
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