Final answer:
Grasshoppers and birds have a predator and prey relationship, while small gazelles and antelopes have no relationship.
Step-by-step explanation:
The relationship between a grasshopper and a bird is a predator and prey relationship. The bird is the predator and the grasshopper is the prey. The bird hunts and consumes the grasshopper for food.
On the other hand, a small gazelle and an antelope have a no relationship as they belong to different species and do not interact or depend on each other for survival.