_the roof of artificial greenbouse
is made slanted, why?

An artificial greenhouse can be described as a greenhouse made by humans.

The roof of a greenhouse is made slanted due to the following reasons:

b exhibiting favoritism toward the kikuyu people.

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.