The trout hatchery is a series of inter?­connected concrete pools; the trout become increasingly bigger as you go along the pools.
Trout hatcheries supply 90% of the world's trout for eating.
mnli hypothesis: Trout hatcheries supply 90% of the world's trout for eating. premise: The trout hatchery is a series of inter?­connected concrete pools; the trout become increasingly bigger as you go along the pools.