Which of the following explains how cells become different from each other?

a. all cells have different dna and thus are different.
b. all cells have the same dna, but turns parts of it on and off.
c. all cells have different dna and turn parts of it on and off.
d. all cells have the same dna and are thus different.

A. All cells have different DNA and thus are different.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.