Gizmo Status The simulation is running.
Note: In the animation, the relative sizes of Earth
and the Moon are accurate, but the distance
between them has been reduced. In reality, the
average distance between Earth and the Moon is
approximately 30 Earth diameters.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

what subject is this

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.