Mutations. Definition. A Mutationoccurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed
The blank is going to represent marijuana, LSD,PCP, and ecstasy. sited by google. hope that helped
Answer:
I believe it's both C and D