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 ingests sediment and extracts food particles?" with the following options: 
- animals
 - soil
 - humans
 - a fish
 - earthworms
 - barnacles
 - h2o
 - bacteria


 

     earthworms    