Fact 1: Changes in the pH of soil can cause plants to die.

Fact 2: Compost balances the pH of soil.

Given the two facts above, answer the question "How do you balance the acidity of soil?" with the following options: 
- Evaporation
 - It decreases
 - composting
 - heating liquids
 - food
 - pruning
 - drink
 - dirt


 

   composting      