Question

State the consequences of ‘eutrophication’.

Answer 1

• Increase in chemical nutrients in an ecosystem. 
• Organic matter in sewage poured into water bodies.
• Excessive nutrients lead to algal blooms and low-oxygen (hypoxic) waters that can kill fish and seagrass and reduce essential fish habitats.
• Many of these estuaries also support bivalve mollusk populations (e.g., oysters, clams, scallops), which naturally reduce nutrients through their filter-feeding activities.