Photography Farm/Shutterstok
In most parts of the world, earthworms are considered the gardener’s friend because they improve soil in many ways. Earthworms feed on decaying organic matter, and their droppings contain soil nutrients such as nitrogen, phosphorus, and potassium in a form that plants can easily absorb. Their tunnels also improve drainage and give the soil a light and airy structure.
Ecologists may use the number of worms in a patch of earth as an indicator of whether the soil has a good pH, plenty of organic matter, and is not too compacted. To measure…
