Do all changes to dna alter the phenotype of an organism? Explain.

No change occurs in phenotype. Some mutations don't have any noticeable effect on the phenotype of an organism.

Explanation:

No change occurs in phenotype.

Explanation:

This can happen in many situations:

perhaps the mutation occurs in a stretch of DNA with no function, or perhaps the mutation occurs in a protein-coding region, but ends up not affecting the amino acid sequence of the protein.

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.