Adisease kills half the populations of both seals and bears. if all other factors in the environment remain the same, how are the seal and bear populations likely to change over the next 10 years?

they’ll both decrease over time

Explanation:

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.