Answer:
I learned that
Ecosystem is composed mostly of mangrove plants and animals like crustaceans and migratory birds.
Mangroves are important because, they serve as breeding and nesting grounds of animal species , natural barriers, and defense
a source of livelihood of people living in coastal areas.
In this kind of ecosystem commensation is shown when animals like crabs and mollusks help break down plant litter in a mangrove ecosystem through grazing. predation is shown when white heron (tagak) ate fishes
hope it helps