Respuesta :

Kalahira
Pollution is an issue that people had been trying to address in order to breathe in healthier air. The pollution is caused by many factors including the transportation which the greatest contributor. Also, we have the big factories contributing to the pollution.
W0lf93
The statement is false. Indoor pollution is rather more dangerous and is caused by harmful chemicals. Due to restricted area, the desnity of the pollutants is higher indoor, and thus, they are build up more inside. This pollution is ten times more worst and may be caused by carbon monoxide, radon, moulds, etc.

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