6. The following graph shows the incidence of typhoid fever in Ethiopia from 1957 through 2010 E. C. Mark the graph to show when this disease occurred sporadically and epidemically. What appears to be the endemic level? What would have to be shown to indicate a pandemic of this disease? (4pts)

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d