Answer: C. factors responsible for formation of mutation in the cell.
Explanation: A mutagen is a chemical or physical phenomenon, such as ionizing radiation, that promotes errors in DNA replication.
Answer:the elements are abc do
Explanation:yea because u can say it is not the same as a third sentence.
Mass communication is different from face to face communication because mass communication is involving radio, television, social networking, billboards, and newspapers wherein a rapid of transmitting messages towards a large number of people is done through this way. While face to face communication is a perception without intervening any technology, it is an interaction of individuals directly with their physical presence.