Various methods of aquaculture can be used to grow species of marine fish. consider the figure below, which shows one way that an aquaculture system can be set up. explain whether this represents an open or closed system and one benefit of using this type of system. this represents a closed system, and one benefit is that all waste is recycled in the system. this represents a closed system, and one benefit is that the risk of passing disease between other species is lower than in an open system. this represents an open system, and one benefit is that it does not release organic waste to cause pollution. this represents an open system, and one benefit is that waste does not accumulate in the system.