Acategory 5 tornado occurred in a community of 400 people resulting in destruction of many homes and businesses. in the 2 years after this disaster, 140 individuals were diagnosed with posttraumatic stress disorder (ptsd). which term best applies to these newly diagnosed cases?
a. prevalence
b. co-morbidity
c. incidence
d. parity

What is the hormone in your brain that makes you feel happy?

Why is the first step in responding to life-threading situations to assess the situation?

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.