One way to reduce the shortage of food for a growing population would be

The most obvious way to reduce the shortage of food is to reduce population which seems like a long term effort however science has enables us to develop certain ways that could be used to reduce the shortage of food. We are familiar with the term genetically modified plants and animals.  

This technique has enabled us to produce plants and animals of our choice at a faster rate than normal.  

With the help of this we can put desirable traits in organisms.

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.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;