Fact 1: Producers use energy and inorganic molecules to make food.

Fact 2: Food preparation for retention of nutrients is included.

Given the two facts above, answer the question "Producers use energy and inorganic molecules for what?" with the following options: 
- neutralizing threats
 - dismissal of nutrients
 - heat produced
 - Transfers energy
 - retention of nutrients
 - decomposition
 - agriculture
 - iron in water


 

     retention of nutrients    