Answer:
d. The heron gets energy from eating the crab.
Explanation:
The heron gets energy from eating the crab. The heron primary feeds on small fish but also on shrimp, crabs, small mammals, amphibians, small birds, rodents, and insects when the fish are not available. After shedding of crab's shell, crabs are prey for fish and birds, and eaten by fish and birds like heron whereas, crabs feed primarily on algae, as well as other food, including molluscs, worms, other crustaceans, fungi, bacteria, and detritus.
