02.19. Two directly transmitted viral diseases have the same
critical immunization threshold (Pc) even though their effects on
the host are different. Which of the following differences between
the two diseases could lead to the same critical immunization
threshold?

Two directly transmitted viral diseases have same critical immunization threshold and the difference between the two is described below.

Explanation:

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.