Topic 3.3 examines the major threats facing global biodiversity, including habitat loss, climate change, pollution, overexploitation, and invasive species. Students learn to evaluate the relative significance of each threat and analyse case studies of biodiversity decline.
Key Idea: We protect biodiversity for aesthetic, ecological, economic, ethical and social reasons — using in situ and ex situ strategies.
Tip: For the [9] EVS essay: name all three value systems, link each to named conservation strategies, balance them, and end with a clear conclusion.
ESS is assessed through Paper 1 (case study) and Paper 2 (short answer & structured questions). Concepts from this topic may appear in either paper, often combined with data analysis or real-world examples.
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Start studying freeTopic 3.3 Conservation and regeneration forms a core part of Unit 3: Biodiversity and Conservation in IB ESS. Mastering these concepts will strengthen your understanding of connected topics across the syllabus and prepare you for exam questions that require analysis, evaluation, and real-world application.
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