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

Fact 2: Aerating means getting air into the wine.

Given the two facts above, answer the question "Earthworm burrows are good for plants because they" with the following options: 
- get air into soil
 - reducing acid rain
 - eliminate toxins
 - hydrate roots
 - preventing heat transfer
 - It helps them survive
 - kill pests
 - important habitats


 

 get air into soil        