A hair shaft is found in the trunk of a car that belongs to a suspect. The medulla diameter measures 20 microns and overall the hair shaft is 40 microns in diameter. What is the medullary index?

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

a physical change is being made.

condenser is used to focus in the light microscope.

answer; ///segregation;