Question 1: Mangrove estuaries are also especially rich and productive ________ and provide the spawning grounds for many species of fish, including many commercially important ones.
Question 4: Commercial shrimp farming began in the 1970s, and production grew steeply, particularly to match the market demands of the U.S., Japan and Western ________.
Question 6: Furthermore, releasing antibiotics in such ways injects them into the ________ and increases the risks of bacteria becoming resistant against them.
Question 7: The origins of industrial shrimp farming can be traced back to the 1930s, when Kuruma shrimp (Penaeus japonicus) was spawned and cultivated for the first time in ________.