What is the charge of an ion with 9 protons and 10 electrons

-1

Explanation:

There are more electrons, which are negatively charged. However, there is only one more electron then proton, therefore, -1.

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.