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21 December, 05:37

Why do plants need sunlight?

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  1. 21 December, 05:44
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    In short, plants require sunlight because that is how they make their food.

    Longer version: Plants use photosynthesis to produce glucose for food with O₂ as a by-product. Without sunlight, photosynthesis cannot happen, and so would have no food to use.
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