Question

what should you add to your ecocolumn if you want to test the effects of nutrients on your ecocolumn? oxygen carbon monoxide styrofoam inorganic fertilizer

Explanation:

Inorganic fertilizer contains nutrients like nitrogen, phosphorus, and potassium. These can be added to test nutrient - related effects on an ecocolumn. Oxygen is a gas for respiration, carbon monoxide is a pollutant, and Styrofoam is a non - biodegradable waste, none of which are nutrients.

Answer:

inorganic fertilizer