Felis leo is most closely related to

felis leo (lion) is most closely related to felis tigris(tiger) and felis domestica(cat ).

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 answer to this question. altitude affects the weather because air molecules evaporate.