Correct Answer: B

Rationale: Plants absorb carbon dioxide (COâ‚‚) from the atmosphere during the process of photosynthesis. Using sunlight as an energy source, they convert COâ‚‚ and water into glucose and oxygen through chemical reactions occurring in the chloroplasts, primarily within the leaves. This process not only sustains plant growth but also produces the oxygen essential for most life forms on Earth. The absorption of carbon dioxide by plants helps regulate the global carbon cycle and mitigate climate change effects, underscoring the ecological importance of forests and green vegetation.

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