What is the most important benefit to farmers who use an aquaponic system?
A They can use one tank to save space in a small room.
B They can sell their system to other farmers.
C They can avoid costs for fish food and plant food.
D They can grow two food products at the same time.
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The correct answer is: C They can avoid costs for fish food and plant food.
Explanation: Aquaponic systems combine aquaculture (raising fish) and hydroponics (growing plants in water) in a symbiotic environment. The waste produced by the fish provides nutrients for the plants, and in return, the plants help filter and clean the water for the fish. This natural cycle reduces the need for additional fertilizers and fish food, ultimately lowering costs for farmers.