Question
A researcher measures the carbon dioxide levels in a sealed aquarium containing aquatic plants, fish, and decomposers. The researcher notices that CO₂ levels fluctuate throughout the day. Which process best explains these fluctuations?(1 point) Responses Photosynthesis removes CO₂ during the day, and respiration adds CO₂ at night. Photosynthesis removes CO₂ during the day, and respiration adds CO₂ at night. Photosynthesis adds CO₂ to the water during the day, and respiration removes it at night. Photosynthesis adds CO₂ to the water during the day, and respiration removes it at night. The fish consume CO₂ during the day and release it at night. The fish consume CO₂ during the day and release it at night. Decomposers absorb more CO₂ at night than during the day.
Answers
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GPT-4o mini
The correct response is: **Photosynthesis removes CO₂ during the day, and respiration adds CO₂ at night.**
During the day, aquatic plants perform photosynthesis, which uses carbon dioxide and releases oxygen. This process reduces the levels of CO₂ in the water. At night, photosynthesis stops, but respiration continues (both in plants and in animals and decomposers), releasing CO₂ back into the water. This leads to a fluctuation in CO₂ levels throughout the day.
During the day, aquatic plants perform photosynthesis, which uses carbon dioxide and releases oxygen. This process reduces the levels of CO₂ in the water. At night, photosynthesis stops, but respiration continues (both in plants and in animals and decomposers), releasing CO₂ back into the water. This leads to a fluctuation in CO₂ levels throughout the day.