Explain how microorganisms, humus, and soil health are related.

Those three are extremely related.Humus is the organic matter that forms in the soil when plant and animal matter decays. It is basicaly the part where the soil is more moistured and receives more nutrients. microoroganisms are present in the matter of plants and anumals and they are very important for the sustainability of the soil. Humus contains many useful nutrients for healthy soil, like nitrogen, which assures the proper health of it.

Explanation: hope it helps ^w^

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.