How is soil sucked into the gut of the earthworm?

Soil is sucked into the gut of the earthworm through a process called ingestion. As the earthworm burrows through the soil, it contracts its muscular pharynx, creating a vacuum that pulls in soil and organic matter. This material is then transported to the crop and gizzard, where it is further processed and broken down, aiding in nutrient absorption. The earthworm's ability to consume soil helps improve soil structure and fertility.