90-95% of the population of the ohio river valley has been exposed to histoplasma capsulatum, but relatively few individuals are diagnosed with histoplasmosis. why is this so

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind