A ball falls off a building which has a height of 100 meters. It hits the ground 4 seconds later. What is the displacement of the ball?

A. 100 meters

B. -100 meters

C. 25 m/s

D. -25 m/s

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

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.

c is the correct answer hope this !