In oceania, most towns began as
a. plantation.
b. tribal ritual centers.
c. capital cities.
d. colonial ports.

D. Colonial ports.
Its D because the settlers began a colony near ports so the big cargo ships can bring more people and equipment.

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.”