Astudent comes across a man who appears to have fallen off a ladder. he is not conscious and does not appear to be breathing. the student checks to see if the area is safe and decides that it is. what should the student do next?

a/ start rescue breathing.
b/ start cpr.
c/ call 911.
d/ ask the victim what happened.

Describe how the above factors create barriers for maintaining your mental and emotional health what barriers do they create

Warming up prepares the body for exercise in what way? a. muscularly b. cardiovascularly c. neurologically d. all of the above

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.