Training a dog to respond to the word "good" as a conditioned reinforcer is accomplished by saying "good"
a. at the same time as presenting a piece of food.
b. immediately after presenting a piece of food.
c. just before presenting a piece of food.
d. repeatedly while using a clicker.

hammurabi rulers

good lesson

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.