Define cell and atom bored​

An atom is the smallest unit of ordinary matter that forms a chemical element.

cell is a basic and functional unit of an organism

An atom is a particle of matter that uniquely defines achemical element.

Cells are the basic building blocks of all living things.

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.