Air Pollution

ىخرج

سؤال 1 of 1

  الوقت المتبقي


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Match each air pollutant to its source.

تطابق النص (انقر واسحب)   

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تطابق النص

carbon monoxide

nitrogen oxides

sulfur dioxide

انقر واسحب

volcanoes and combustion of fossil fuels

incomplete combustion of carbon-containing substances

lightning activity and internal combustion engines