Photosynthesis is the process that involves using energy from the Sun to convert water (H₂O) and carbon dioxide (CO₂) into glucose and oxygen. Here's how it relates to your options:
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A. Splitting water into hydrogen and oxygen: This occurs during the light-dependent reactions of photosynthesis, where water is split (photolysis) to release oxygen.
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B. Releasing oxygen: This is a byproduct of the light-dependent reactions of photosynthesis, where oxygen is released into the atmosphere after water is split.
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C. Absorbing carbon dioxide: In the light-independent reactions (Calvin Cycle) of photosynthesis, plants absorb carbon dioxide from the atmosphere.
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D. Combining carbon dioxide and hydrogen: This takes place during the Calvin Cycle, where carbon dioxide combines with hydrogen (derived from water) to produce glucose.
The main processes of photosynthesis include absorbing sunlight, splitting water, absorbing carbon dioxide, and producing glucose and oxygen. So, in essence, all the processes mentioned relate to photosynthesis, but they pertain to different stages of the overall process.
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