Imagine you're a plant, and the sun is like your favorite teacher. Every day, you look at how much time the teacher spends with you, that's called light cycles. If the teacher stays longer in the morning (long days), you know it's summer and time to grow more leaves or flowers. But if the teacher goes home early (short days), you know it's winter and it's time to rest.
Examples
- A dandelion knows it’s time to bloom when the days get longer in spring.
- The morning glory flower opens only when there's enough sunlight.
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