What scenario best explains why the population is diverging?

lower levels of immigration, population aging, and declining fertility rates. A drop in net immigration to the United States is a key factor in the country's declining population growth rate.

HOPE THIS HELPS

u didn't give the actual types of scenarios so

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.

what in the weirdo : o