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

Fact 2: Earthworms are perhaps the most familiar decomposer.

Given the two facts above, answer the question "What can help form and enrich soil?" with the following options: 
- Most plants
 - whales
 - the Sun
 - decomposers
 - swamp vegetation
 - shrub beds
 - phytoplankton
 - fossil fuels


 

    decomposers     