What is the job(s) of the following macro molecules? protein carbohydrate lipid and nucleic acid

The four macromolecules are nucleic acids, carbohydrates, proteins, and lipids.

it’s lava came from an explosive eruption

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.