1 snail and 2 plants are required to maintain a stable environment because it consumes oxygen and emits carbon dioxide after 12 hours in the light.
Plants release oxygen during the day in the presence of natural light via the photosynthesis process. During the night, plants absorb oxygen and expel carbon dioxide, a process known as respiration. They are subjected to 24 hours of darkness and light. When the plant and snail are placed in the dark, the snail produces a large amount of carbon dioxide.
Snails are as sensitive to dry conditions as they are to high temperatures. A snail's body can dry out and die if there is insufficient moisture. Snails seek out shelter that is both dark and damp because dark places are the last to dry out.
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