6. The following aquariums were set up with the same volume of water. (Elodea is an aquatic green plant.)
aquarium 1: Elodea only
aquarium 2: Elodea and an aquatic snail
aquarium 3: Aquatic snail only

Which aquariums will establish a cycle of carbon dioxide and oxygen gas flow if placed in the dark for several weeks?

(1 point)
1, 2, and 3
2 and 3
3 only
none

Question

6.   The following aquariums were set up with the same volume of water. (Elodea is an aquatic green plant.)
aquarium 1: Elodea only 
aquarium 2: Elodea and an aquatic snail
aquarium 3: Aquatic snail only

Which aquariums will establish a cycle of carbon dioxide and oxygen gas flow if placed in the dark for several weeks?

 (1 point)
1, 2, and 3
2 and 3
3 only
none

anonymous · Answer

None. The only possible one is the one with the plant and the animal, but the plant ultimately relies on light to produce Oxygen. So if it is in the dark it won't work.

anonymous · Answer

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