Select the correct answer from the drop-down menu. the human body includes many physiological systems that carry out specific tasks to ensure the effective functioning of the body. choose the correct option to complete the sentence. the respiratory system is the system of the body. it works in coordination with the system to make oxygen- rich blood available to the body’s organs. reset next

In the category column, classify the following activities as either health promotion or health protection. if any of these actions fall under both the categories, write both. in the reason column, write down your reason for making each classification.

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.

Which activity causes the greatest risk of driving fatalitiesa. driving at nightb.driving while distractedc.driving with a passengerd.driving on a clear day