The distance between neptune and the sun is 30.06 au. what is this distance in millions of kilometers? (one au is about 150 million kilometers.) 450 million kilometers 450.9 million kilometers 4,000 million kilometers 4,509 million kilometers

30.06 AU x [ (150 million km)/(1 AU) ]

4,509 million km

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 decreasing because of illnesses