Which water source may become polluted as it travels over land? ponds
groundwater
oceans
runoff

hi!

it would be because of the artist sixnine.

hope 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.