What is the main function of a vacuole in a cell

in plant cells, it's usually to store in water and provide the plant support. in animal cells, it's to store the food.

hope this helps! ❤ from peachimin

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.