Environmental factors can influence natural selection because they can increase or decrease O the number of chromosomes in an individual.
O the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.

Ithink the answer is c. i’m not sure though i’ll notify you when i have an exact answer!