PCR (select one):
a. Is used to transcribe specific genes.
b. Amplifies specific DNA sequences.
c. None of these are correct.
d. Uses a DNA polymerase that denatures at 55 degrees Celsius.
e. Uses primers that are added only to one of the two template strands.

Option B) Amplifies specific DNA sequences.

Explanation:

Polymerase chain reaction (PCR) refers to the selective and repetitive duplication of a specific DNA sequence. It involves the following: heat, an enzyme called thermos aquaticus and annealing.

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.

high growth (apex)