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Why is it necessary to grow plants in an aquarium?

(1) To increase the supply of oxygen to fishes

(2) It beautifies the aquarium

(3) To increase CO2 in the atmosphere

(4) To give more food to fish

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Why is it necessary to grow plants in an aquarium? (1) To increase the supply of oxygen to fishes..

Answer / guest

( 1 ) To increase the supply of oxygen to fishes

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