Which regions in Canada are of particular concern for smog?

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Multiple Choice

Which regions in Canada are of particular concern for smog?

Smog tends to be a bigger concern where there are lots of people and lots of pollution sources, and where weather patterns trap the pollutants so they accumulate. In Canada, that combination shows up in the population centers and industrial regions, especially in Ontario and Quebec, in British Columbia’s Lower Mainland, and in the southern Atlantic provinces. These areas have dense populations and substantial emissions from vehicles, industry, and energy use, and are also prone to atmospheric conditions that concentrate pollutants into smog events. Regions with fewer large urban emission sources or with weather less likely to trap pollution generally experience fewer persistent smog episodes, which is why those other options aren’t as strongly associated with smog concerns. They can still have episodic smog from wildfires or distant pollution, but the best-known and most persistent smog issues in Canada arise in the listed populous regions and nearby Atlantic areas.

Smog tends to be a bigger concern where there are lots of people and lots of pollution sources, and where weather patterns trap the pollutants so they accumulate. In Canada, that combination shows up in the population centers and industrial regions, especially in Ontario and Quebec, in British Columbia’s Lower Mainland, and in the southern Atlantic provinces. These areas have dense populations and substantial emissions from vehicles, industry, and energy use, and are also prone to atmospheric conditions that concentrate pollutants into smog events.

Regions with fewer large urban emission sources or with weather less likely to trap pollution generally experience fewer persistent smog episodes, which is why those other options aren’t as strongly associated with smog concerns. They can still have episodic smog from wildfires or distant pollution, but the best-known and most persistent smog issues in Canada arise in the listed populous regions and nearby Atlantic areas.

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