Fact 1: Earthworm burrows help aerate soil, which is also good for plants.

Fact 2: Earthworms are perhaps the most familiar decomposer.

Given the two facts above, answer the question "What helps aerate soil, which is also good for plants?" with the following options: 
- trees
 - bacteria
 - loose dirt
 - decomposers
 - dogs
 - the Sun
 - hydration
 - Exfoliation


 

    decomposers     