The vocal cords are two bands of tissue that extend across the opening of the: larynx glottis trachea epiglottis

your answer is rna to the question.

[content deleted] - user123802726recklesschicken

answer; i believe its (ovulation);

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.