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Sunflowers actively track solar radiation across the sky

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Imagine being so incredibly needy for sunlight that you physically twist your entire body to stare at it all day. Sunflowers exhibit heliotropism, a fancy botanical term for acting like a paranoid security camera tracking a target. One side of the stem grows faster than the other, creating a mechanical bend that forces the flower face to follow the sun's exact path until dusk.

Sunflowers actively track solar radiation across the sky
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