D4 2 Stability & Change

Visit the website: https://sites.google.com/lpcuwc.edu.h... D4.2 Stability & Change | IB Biology Welcome to Parsons Biology! In this lesson we explore D4.2 Stability & Change from the IB Biology syllabus. We'll investigate how ecosystems maintain stability in the face of environmental change, exploring the factors that promote resilience, the consequences of crossing ecological tipping points, and the role of scientific models in predicting ecosystem responses. You'll examine keystone species, sustainable resource management, agriculture, pollution and ecosystem restoration, before investigating ecological succession and the processes that shape ecosystems over time. Higher Level students will also explore primary, secondary and cyclical succession, climax communities and arrested succession. By the end of this lesson, you should be confident with the key understandings, applications and skills required by the IB Biology course. ━━━━━━━━━━━━━━━━━━━━━━ In this lesson • Ecosystem stability • Resistance and resilience • Factors affecting ecosystem stability • Biodiversity and stability • Ecological tipping points • Scientific models and mesocosms • Keystone species • Sustainable resource harvesting • Sustainable agriculture • Eutrophication • Biomagnification • Plastic pollution • Rewilding and ecosystem restoration • Ecological succession (HL) • Primary and secondary succession (HL) • Cyclical succession (HL) • Climax communities and arrested succession (HL) ━━━━━━━━━━━━━━━━━━━━━━ Chapters 00:00 Stability of Ecosystems 12:36 Models 19:46 Sustainability 32:07 Agriculture & Eutrophication 40:58 Pollution & Restoration 51:04 Ecological Succession (HL) ━━━━━━━━━━━━━━━━━━━━━━ Parsons Biology Making IB Biology clear, engaging and accessible for every student.