CourseCourseConceptConceptDocsDocuments

IB ESS SL 4.4.7 Eutrophication and Ecosystem Services Questions

Evaluate effects of eutrophication on ecosystem services.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • explain how excess nutrients cause algal blooms, reduced light, plant death, oxygen depletion and aquatic organism mortality
  • link eutrophication and positive feedback from decomposition to dead zones, reduced secondary productivity and loss of aquatic food production
  • evaluate the consequences of nutrient pollution for fisheries, ecosystem services, biodiversity and human food security

IB ESS SL 4.4.7 Eutrophication and Ecosystem Services Questions question 1

[Maximum number: 4]
Figure Diagram showing the expanse of the Mississippi River basin draining into the Gulf of Mexico

Figure Diagram showing the expanse of the Mississippi River basin draining into the Gulf of Mexico

Figure Pie charts showing sources of nutrients delivered to the Gulf of Mexico from the Mississippi River

Figure Pie charts showing sources of nutrients delivered to the Gulf of Mexico from the Mississippi River

Explain how nutrient pollution could impact aquatic food production in the Gulf of Mexico.

All question bank results loaded