State what is meant by the term metabolic.

Metabolism is the term for chemical reactions that occur in the cells of living organisms . The metabolic process help humans grow and sustain.It is also often said that the higher the metabolism the healthier is the person.

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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.