Respuesta :

Answer:

Oxygen depletion

Explanation:

Im no 100% positive so please correct me if im wrong.

Answer: Algal bloom

Explanation: Harm to any of these organisms can create a chain effect, imperiling entire aquatic environments. When water pollution causes an algal bloom in a lake or marine environment, the proliferation of newly introduced nutrients stimulates plant and algae growth, which in turn reduces oxygen levels in the water.