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IB Biology Topic D4.2 Sustainability and Change Notes… | RevisionDojo

A1.1 Water

A1.2 Nucleic acids

A2.1 Origins of cells (HL)

A2.2 Cell structure

A2.3 Viruses (HL)

A3.1 Diversity of organisms

A3.2 Classification and cladistics (HL)

A4.1 Evolution and speciation

A4.2 Conservation of biodiversity

B1.1 Carbohydrates and lipids

B1.2 Proteins

B2.1 Membranes and membrane transport

B2.2 Organelles and compartmentalization

B2.3 Cell specialization

B3.1 Gas exchange

B3.2 Transport

B3.3 Muscle and motility (HL)

B4.1 Adaptation to environment

B4.2 Ecological niches

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling (HL)

C2.2 Neural signalling

C3.1 Integration of body systems

C3.2 Defense against disease

C4.1 Populations and communities

C4.2 Transfer of energy and matter

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutations and gene editing

D2.1 Cell and nuclear division

D2.2 Gene expression (HL)

D2.3 Water potential

D3.1 Reproduction

D3.2 Inheritance

D3.3 Homeostasis

D4.1 Natural selection

D4.2 Sustainability and change

D4.3 Climate change

IB
D4.2 Sustainability and change

IB Biology Topic D4.2: Sustainability and Change

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.

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14 lessons

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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)

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What this topic covers

D4.2 Sustainability and change

Topic D4: Ecosystems

Theme D: Continuity and Change