C
Chemistry , 11.07.2022 17:05

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Answered by an experienced expert valeria.grebenchenko

Options:
A. A terrarium with mice and wood shavings
B. An aquarium with fish and plastic plants
C. An aquarium with water plants and a snail
D. A terrarium with a frog and a pool of water

Answer:
C. An aquarium with water plants and a snail
 

Explanation:

The correct answer is C.
In the aquarium, the water plants would provide the O2 molecules necessary for the snail's metabolism and the snail would release the CO2 molecules that are a byproduct of his metabolism into the container. The CO2 would later be used by plants to make sugar in the process of photosynthesis, releasing more O2 and the cycle of two gases would be completed.

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