The substance that would be added in order to reverse the reaction would be any substance that is found in the product side. Adding a substance that tends to be a product will shift the equilibrium of the system and will allow the reaction to produce the substances that is found in the reactant side.
sus pricipales factores limitantes son la disponibilidad de luz solar y la concentración de oxígeno disuelto y nutrientes en el agua
I know for sure its not A. but im not sure what the answer is i took the quiz and A was wrong.
D) Exercise is the answer
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