Brian is a healthy young man he has been training with his teammates for 50 yard dash for months however even with practice he cannot run fast enough to qualify what is the most likely reason that Brian can’t qualify

Name three bad things that can happen to a teenager who has no refusal skills and no self-control:

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.

How does the way a persons brain function affect their mental health?