Nearly 50% of water sources in the united states are believed to be polluted. select the best answer from the choices provided t f

The correct answer for above statement is:

The main source of water is in the ground and the groundwater gets constantly more polluted with road salt, oil, gas and other chemicals (and as you can see, these are all manmade products).Sewage, trash and liquid waste of households, agricultural lands and factories are released into lakes and rivers.

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.