What is the purpose of the biogeochemical cycles?

a. to cycle energy through a food chain
b. to recycle matter through the biosphere
c. to recycle rocks through the layers of earth
d. to cycle nutrients through the human 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.