Which of the following is likely to contribute to geological events that take place on earth? crust undergoing convective currents crust being of uniform thickness throughout crust being a single layer that surrounds earth crust sitting on top of molten rock of the mantle

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.