Question

What is a possible consequence of fertilizer runoff in aquatic ecosystems? short paragraph

Answer 1

Fertilizer runoff into lakes, rivers, and coastal waters adds excess nitrogen and phosphorus that fuel rapid algal blooms; when the algae die and decompose, microbial decomposition consumes dissolved oxygen, causing hypoxic or anoxic conditions that can kill fish and other aquatic life, reduce biodiversity, and create “dead zones” where few organisms can survive.