Bacteria in soil convert atmospheric nitrogen into a form usable by plants, and like nitrogen, phosphorus is a plant nutrient. Given these facts, what in the soil converts a type of nutrient into a form usable by plants among the following options:
- sugar
 - Beetles
 - Plants
 - Glucose
 - Bacteria
 - a solute
 - Roots
 - Enzymes


 

     Bacteria    