IB Biology HL D4.2.1 Stability of Natural Ecosystems Topic Practice

CourseCourseConceptConcept DocsDocuments

A Unity and Diversity

B Form and Function

C Interaction and Interdependence

D Continuity and Change

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutation and gene editing

D2.1 Cell and nuclear division

D2.2 Gene expression [HL only]

D2.3 Water potential

D3.1 Reproduction

D3.2 Inheritance

D3.3 Homeostasis

D4.1 Natural selection

D4.2 Stability and change

D4.2.1—Stability of natural ecosystems

D4.2.2—Requirements for stability

D4.2.3—Amazon rainforest deforestation

D4.2.4—Mesocosm model

D4.2.5—Keystone species

D4.2.6—Sustainable resource harvesting

D4.2.7—Agriculture sustainability factors

D4.2.8—Eutrophication

D4.2.9—Biomagnification

D4.2.10—Plastic pollution of oceans

D4.2.11—Rewilding

D4.2.12 (HL)—Ecological succession

D4.2.13 (HL)—Changes during primary succession

D4.2.14 (HL)—Cyclical succession

D4.2.15 (HL)—Climax communities and arrested succession

D4.3 Climate change

IB/Biology/HL//Question Bank/D Continuity and Change/D4.2 Stability and change/D4.2.1—Stability of natural ecosystems

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