Dispersal Methods - nature's elaborate evolutionary calculus includes variables... 1. Competing Type here...
2. Type here... resources, i. e. wind, water
3. Presence of Type here...
4. Type here...

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.

the answer is a) cell division.

hope this !