A. Preparation i think I’m sorry if it isn’t right
Answer:
Genetic Change in Viruses. Viruses are continuously changing as a result of genetic selection. They undergo subtle genetic changes through mutation and major genetic changes through recombination. Mutation occurs when an error is incorporated in the viral genome.
Disruption to the "normal" state of mind is due to an event is STRESS
They let you and the doctor know what is going on in your body. the health of you and the unborn baby.