IB Biology Topic D4.2 Sustainability and Change (SL/HL) covers syllabus content as part of Topic D4: Ecosystems under Theme D: Continuity and Change. Use these notes, questionbank, videos, flashcards, and lessons to review the topic, practise exam questions, and move between notes, videos, flashcards, and lessons where available.
D4.2 Sustainability and change is part of Topic D4: Ecosystems under Theme D: Continuity and Change.
What this topic covers
D4.2.1 Stability as a property of natural ecosystems
D4.2.2 Requirements for stability in ecosystems
D4.2.3 Deforestation of Amazon rainforest
D4.2.4 Use of a model to investigate the effect of variables on ecosystem stability
D4.2.5 Role of keystone species in the stability of ecosystems
D4.2.6 Assessing sustainability of resource harvesting from natural ecosystems
D4.2.7 Factors affecting the sustainability of agriculture
D4.2.8 Eutrophication of aquatic and marine ecosystems due to leaching
D4.2.9 Biomagnification of pollutants in natural ecosystems
D4.2.10 Effects of microplastic and macroplastic pollution of the oceans
D4.2.11 Restoration of natural processes in ecosystems by rewilding
D4.2.12 Ecological succession and its causes (HL)
D4.2.13 Changes occurring during primary succession (HL)
D4.2.14 Cyclical succession in ecosystems (HL)
D4.2.15 Climax communities and arrested succession (HL)