1. Why do you think the continents don't fit together perfectly? What processes have occurred since? 2. How do you think the movement of the continents since the time of Pangea is related to a theory called "seafloor spreading'? ​

Air pollution: “combustion results in gases such as nitrogen oxides, nitrogen dioxide and particulates. the main causes of air pollution include transport, domestic combustion and industrial processes. pollutants from these sources can cause problems in the immediate vicinity and a distance away.”