What are the chances of a child with brown eyes? *

Each child has a 25% chance of having brown eyes and a 75% chance of having blue eyes.

Explanation:

I added the little bit of extra info just to be helpful

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.