Which one is an accurate description of the process of erosion?

a.) breaking rocks into smaller pieces.
b.) forming rocks and depositing them in new places.
c.) moving bits of rock and soil across the earth’s surface by water, wind, or glaciers.
d.) water moving over the earth's surface and into the atmosphere.

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.