When density increases, the number of molecules in a

a. increases
b. decreases
c. stays the same
d. varies

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

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.