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From Seed to Seed: |
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With their hard seed coats protecting the delicate plant embryos within, seeds are miracles of evolution. Many seeds are able to endure long periods of drought, heat, or freezing temperatures-yet are ready to spring to life when favorable conditions arise. Depending on the adaptations that they have made to survive in their native environments, different plants' seeds may require darkness, light, warmth, chilling, mechanical abrasion, or even exposure to fire before they will germinate. |
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