What would happen if a transcription error occured and GCU was actually encoded as GCA A- an inncorrect amino acid would be brought into translation
B- an early stop codon would occur at translation
C- There would never be a start codon
D- The same amino acid will be brought in at translation

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.

a time line cause it goes from 685 to 978