You are presented with the question "Soil can be depleted of which of the following?" and the following answer choices: 
- Potassium carbonate
 - Chlorophyll
 - neon
 - sedimentary rocks
 - carbon monoxide
 - helium
 - Organic compounds
 - vegetation

Now knowing that soil can be depleted of nutrients and potassium carbonate is a valuable nutrient for plants, choose the best answer.


 

 Potassium carbonate        