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    • Earthworm casts on grass.
    Rights: Ross Gray Published 12 June 2012 Size: 150 KB Referencing Hub media

    Earthworm casts are digested material that earthworms excrete. Their digestion unlocks nutrients like nitrogen and phosphorus, making them more available to plants.

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      Earthworms’ role in the ecosystem

      Charles Darwin is well known for his work on natural selection. He published widely on topics ranging from barnacles to geology to plants. He travelled the world and saw many unusual animals ...

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