A rock with a mass of 10.0kg is balanced on top of a large boulder describe the forces acting on the rock

≅200-130 milions years ago pangea splited in 2 continents

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.