Flashcards
IB ESS Topic 4 Definitions
Cards in this deck (12)
- 1BiodiversityAmount of biological or living diversity per unit area.
- 2Species DiversityVariety of species per unit area. Includes both number of species present + relative abundance
- 3Habitat DiversityRange of different habitats or number of niches per unit area in an ecosystem or biome
- 4Genetic DiversityRange of genetic material in a gene pool or population of a species
- 5SpeciesA group of organisms that interbreed to produce fertile offspring
- 6IsolationProcess by which two populations become separated by geographical, behavioural, genetic or reproductive factors
- 7SpeciationProcess through which new species form
- 8EvolutionChanges in the genetic composition of a population over time
- 9Plate tectonicsThe movement of the 8 major and several minor internally rigid plates of the Earth's lithosphere in relation to each other of the partially mobile asthenosphere below
- 10SuccessionThe orderly process of change over time in a community
- 11Pioneer speciesThe first species to arrive in the formation of an ecosystem in primary succession
- 12Climax communityA community of organisms that is stable + in equilibrium with natural environmental conditions. The final stage of ecological succession
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- Flashcards on IB ESS Topic 4 Definitions, created by ebongle24 on 17/10/2015.
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