How could you leave home on monday to go sailing, sail for an hour on sunday, and return home on monday

Well wait till Sunday gets there then the next day come home

Leave the first Monday, stay somewhere for 6 days, sail on that Sunday and go home the second Monday

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.”

Its in the national history museum and you can't se the original because its locked away in a vault