Second and third class levers are differentiated by
a.
the location of the fulcrum
b.
the location of the load
c.
the presence of multiple loads
d.
the type of fulcrum present

Which action is part of becoming involved in community health? a) supporting regional health efforts b)selecting reputable health providers c)creating new health issues to address d)traveling to new regions to promote global health plz i need to graduate

If something is painful during exercise, what should you do? a. back off the exercise. b. modify the exercise. c. consult a physician if the pain persists. 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.