What are the differences between carbon dioxide in the day and in the night?

During the day, carbon dioxide levels can decrease due to photosynthesis, as plants absorb CO2 and release oxygen in sunlight. At night, photosynthesis ceases, and respiration processes in plants, animals, and microorganisms release CO2 back into the atmosphere, often leading to higher concentrations. Additionally, temperature variations between day and night can influence CO2 solubility in water bodies, affecting overall CO2 levels. Thus, daytime CO2 levels are typically lower due to photosynthetic activity, while nighttime levels can rise due to respiration.