In african savannas elephants are a keystone species. elephants eat small trees, such as acacia, that grow on the savanna. even if an acacia tree grows to a height of several feet, elephants are able to knock over the tree and uproot it. imagine a drastic decline the elephant population that live within the african savannas. what would be the inevitable result?

your answer is true

i am 100% sure

explanation:

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.