Question Statement:
Read the passage: 'Aquaponics couples recirculating aquaculture with hydroponic plant cultivation in a symbiotic closed-loop system. Effluent from fish rearing tanks, rich in metabolic waste, is biologically converted by nitrifying bacteria into plant-absorbable nitrates. The plants filter and absorb these nutrients, purifying the water before it is recirculated back to the fish tanks.' The fundamental message of this passage is that:
Options:
- (A) Aquaponics creates a mutually beneficial bio-cycle by integrating fish wastewater filtration with crop nutrient uptake.
- (B) Fish cannot survive in closed aquaculture tanks without artificial aeration.
- (C) Nitrifying bacteria are harmful pathogens that poison fish stocks.
- (D) Hydroponic plants require synthetic chemical fertilizers to survive in aquaponics.