Are the hair-like appendages of cells lining parts of the respiratory tract that sweep debris away from the lungs.

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: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

the correct answer is 2 and 4