Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-soil-water-7bbb12444c6f

How do earthworm casts help soil?

They make soil richer in nutrients.

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  1. They stop water from soaking in
  2. They make soil richer in nutrients ✔
  3. They make soil salty

Why: Earthworm casts are richer in nitrogen, phosphates, and potash than soil.

Huh, didn't know that: Earthworm casts are richer in nitrogen, phosphates, and potash than soil.

The dad joke
Worms cast a spell of fertility on soil.
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References

Answer: They make soil richer in nutrients. Earthworm casts are richer in nitrogen, phosphates, and potash than soil.

  1. Soil conservation en.wikipedia.org/wiki/Soil_conservation
    Earthworm casts are five times richer in available nitrogen, seven times richer in available phosphates and eleven times richer in available potash
    Checked 2026-11-07.

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