The process by which nutrient enrichment of an aquatic ecosystem leads to dense growth of plant life and subsequent depletion of dissolved oxygen is called:

💡 Solution & Explanation

Eutrophication occurs when excess nutrients like nitrogen and phosphorus enter water bodies, triggering rapid algal blooms and subsequent oxygen depletion. Unlike salinization or desertification which relate to soil degradation, eutrophication strictly concerns aquatic nutrient loading and ecological suffocation.