What is the function of a circulatory system? what is the function of a circulatory system? it is the site of blood cell production. it acts as a reservoir for the storage of blood. it brings a transport liquid into close contact with all cells in the body. it exchanges oxygen and carbon dioxide with the outs

It brings a transport liquid into close contact with all cells in the body.

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.