As they multiply die and decompose algae deplete the oceans surface layers of oxygen. often the large amounts of farm fertilizer that run from fields into the rivers cause algae populations to explode. the most likely result is that

Algae blooms are the consequence of large amounts of farm fertilizers in the rivers. Algae use the presence of increased nutrients and enhance their own growth. It is known that they produce an oxygen in the photosynthesis, so it is not a problem while they are still alive. But when these organisms die, their decomposition begins. For the process of decomposition, the oxygen is needed and ultimately it will be depleted from a body of water. This could lead to the death of aquatic animals that depend on oxygen.

i think that the best answer would be c.

tell me if im wrong : )

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.