Describe the advantages of vascular tissue (xylem and phloem) in a category of nonvascular and vascular?

Most of the advantages of vascular tissue are A tracheopyte xylem and phoelm which comprise the vascular system and are housed in a stem enable nucleus ,nutrients and energy to be transported and distributed throughout..

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.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.