what most likely would happen to the animal populations after chemical spraying kills most of the region's mosquitoes and gnats, both of which are sources of food for frogs?
A.a decrease in both frogs and snakes
B.a decrease in frogs and an increase in grasshoppers
C.an increase in both frogs and snakes
D.a decrease in snakes and an increase in hawks
E.an increase in both snakes and hawks