HOW DO EARTHWORMS HELP THE SOIL?

 Some 7000 earthworm species live at all soil depths in most temperate and many tropical environments.They dominate the soil's invertebrate realm.They burrow through soil,aerate it,increase its porosity, and make channels for plant roots.Their biggest contribution. However, is their waste called castings.Worm castings form a major organic component of soil and increase its fertility abundantly.

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