How are humans negatively impacting the carbon cycle?

By producing carbon monoxide through cars and factories.

Explanation:

Cars and factories are what creates smog and unsafe living conditions for people, and by doing so, we are ruining the carbon cycle because of the excessive amounts of carbon monoxide that is being transferred into the air, thus even ruining plants and their development of oxygen for a healthy, clean Earth.

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.