Speciation means the formation of a new species.

True
False

true

Explanation:

Definition: Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge.

true because it means the formation of a new plant or animal species

i'd think it's paralell

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.