Fact 1: Some precipitation that falls on land may soak into the ground, becoming groundwater.

Fact 2: Autumnal pools fill during the fall with rising groundwater.

Given the two facts above, answer the question "Some precipitation that falls on land may fill what?" with the following options: 
- loose soil
 - important habitats
 - autumnal pools
 - swamp vegetation
 - storing water
 - mouth of rivers
 - Sediment
 - loose dirt


 

   autumnal pools      