Idon’t get this i was in vacation and i missed all this

What challenges did dallas face as a youth and as an adult? in “the girl-with-no-name”

There are two main levels of responsibility related to fitness and fire apparatus operations and preventing injuries and line of duty deaths. the first level involves personal responsibility. the second level involves

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.