The tunneling of earthworms brings up nutrients from deep soils to the surface. Earthworms eat and digest soil and the organic wastes it contains, and their own wastes provide nourishment for plants and other organisms.
These channels improve drainage and make it easier for plants to send down roots. It may be doubted whether there are many other animals which have played so important a part in the history of the world." As they tunnel in the soil, earthworms open channels that allow in air and water. "Long before existed," he said, "the land was in fact regularly plowed and still continues to be thus plowed by earthworms. Earthworms do not get a lot of respect these days, but Charles Darwin wrote an entire book explaining how important they are. Did You Know? Although there are many kinds of worms, both flat and round, we usually think of earthworms when someone mentions worms.
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