IB Biology D4.2 Definitions

This page contains our IB Biology definitions for D4.2. By learning each one of these definitions, you will fully cover the content for IB Biology 'Ecological stability'.

All Topic 4 Sub-topics A4.1: Evolution & Speciation (HL)A4.1: Further speciation A4.2: Conservation Of Biodiversity B4.1: Adaptations B4.2: Ecological Niches C4.1: Populations & Communities C4.2: Energy & Matter Transfer D4.1: Natural Selection (HL)D4.1: Further natural selection D4.2: Stability & Change (HL)D4.2: Ecological stability D4.3: Climate Changes (HL)D4.3: Further climate change

climax community

A community which through ecological succession over time has reached a steady state.

community

The population of different species living together and interacting in a single area

Ecological succession

The process of sequential change over time within an ecosystem.

ecosystem

The interaction of a community with its abiotic environment

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