A predator/prey relationship exists between –  
F. 
A caterpillar and an ant, when the caterpillar feeds on the ant’s eggs.
G. 
A cuckoo and a warbler, when the cuckoo lays its eggs in the nest of the warbler.
H. 
A honeysuckle flower and a hummingbird, when the honeysuckle attracts the hummingbird with nectar.
J. 
A hyena and a vulture, when the hyena eats elephant remains alongside the vulture.