Fact 1: Earthworms are important deposit feeders that help form and enrich soil.

Fact 2: Deposit feeders ingest sediment and extract food particles.

Given the two facts above, answer the question "What happens when Earthworms ingest sediment and extract food particles?" with the following options: 
- The soil is unhealthy
 - Plant growth is reduced
 - heat produced
 - major threat to health
 - The earthworm reproduces
 - competing for resources
 - The earthworm dies
 - The soil is enriched


 

        The soil is enriched 