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

Fact 2: Aeration breaks up the soil and allows water to penetrate.

Given the two facts above, answer the question "_ allow water to penetrate the soil." with the following options: 
- crawfish burrows
 - major threat to health
 - Deposition
 - bending light rays
 - earthworm homes
 - Exfoliation
 - termite burrows
 - Earthworm burrows


 

        Earthworm burrows 