What two factors play a role in the type of snow flake created?

Two factors play key roles in determining the shape of a snowflake: temperature and humidity.

Explanation:

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.