IB Environmental Systems and Societies

Topic 1: Foundation

Topic 2: Ecology

Topic 3: Biodiversity and conservation

3.1 Biodiversity and evolution

3.2 Human impact on biodiversity

3.3 Conservation and regeneration

Topic 6: Atmosphere and climate change

Topic 7: Natural resources

Topic 8: Human populations and urban systems

Concept/IB ESS/SL/Topic 3: Biodiversity and conservation/3.1 Biodiversity and evolution

3.1 Biodiversity and evolution

Syllabus: First assessment 2026
Topic: 3.1
Level: SL

What you’ll learn

9 learning objectives

Choose one objective for a focused lesson, or study the complete topic.

3.1 Biodiversity and evolution