Fact 1: Most plants grow roots down into the soil to absorb water and minerals.

Fact 2: Plant roots begin to stabilize the soil against erosion.

Given the two facts above, answer the question "What is a positive effect of plant needs for water and minerals from soil?" with the following options: 
- erosion prevention
 - reducing acid rain
 - It helps them survive
 - agriculture
 - nutrient deficiency
 - water run-off
 - erosion
 - Exfoliation


 

 erosion prevention        