how does earthworms improve soil as they eat dead plants material?
<answer> Earthworms improve soil as they mix organic material into the soil by tearing off portions of plant material and burying it deep within the earth as they eat dead plants material. <context> Organic Material. Earthworms contribute to soil formation by assisting in the decomposition and incorporation of organic materials into the soil. Earthworms eat leaves and dead roots found on or near the soil’s surface. They mix this organic material into the soil by tearing off portions of plant material and burying it deep within the earth. As they eat, they grind bits of plant material in their gizzards and excrete the organic matter into the soil through their casts. Earthworm casts also pile up on the surface of the soil, adding to soil content. In addition, earthworms stimulate the activity of beneficial bacteria and fungi.