Pacemakers maintain the heartbeat in people who suffer from certain defects. The function of an artificial pacemaker is to send electrical impulses that will contract the heart muscles and regulate the pumping of the heart. Which condition could be corrected by a pacemaker? A.
The individual’s sinoatrial node ceases to function.
B.
The individual’s central nervous system fails to signal the heart to contract and relax.
C.
The individual’s arteries are blocked.
D.
The valves in the individual’s heart cease to function.

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.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added