Based on the information provided regarding the photosynthetic organism at hour 12, we can infer the following:
- At hour 12, the organism is likely experiencing nighttime conditions, as you mentioned it is nighttime.
- During nighttime, photosynthetic organisms do not perform photosynthesis because there is no light to drive the light-dependent reactions. Instead, they undergo respiration, which consumes oxygen and releases carbon dioxide.
Therefore, the best statement to describe what is happening with this photosynthetic organism at hour 12 is that it is not performing photosynthesis and is likely respiring, leading to a change in gas levels (e.g., a decrease in oxygen or possibly an increase in carbon dioxide, depending on the conditions).
So, it is safe to say that at hour 12, the organism is in a state of respiration due to the absence of light.
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