In your own words, explain why a virus such as the rhinovirus, which relies on close contact to spread, might evolve to favor less virulent forms

Viruses tend to become less virulent over time because those viruses capable of killing their hosts too fast don't have enough time to reproduce.

In conclusion, it has been proposed that viruses tend to become less virulent over time because those viruses capable of killing their hosts too fast don't have enough time to reproduce.

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Rhinoviruses are transmitted through the air or via contact. We might expect this sort of transmission to require a fairly healthy host (one who gets out and comes into contact with others) and, hence, to select against virulent strains. If we take precautions and try to stay away from people or avoid any contact with people, more hand-washing stations, increased attention to sanitization, and isolation of patients will help to reduce the transmission of the disease and, in the process, may favor the evolution of less virulent strains of the virus.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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