AQA A2 Biology Populations Definitions 0.0 / 5 ? BiologyEcology and biodiversityEcology, ecosystems and environmental biologyA2/A-levelAQA Created by: laurenCreated on: 23-04-14 19:57 2541381097 Across 1. The range and variety of organisms in a particular area (12) 4. Selection that tends to eliminate the extremes of the phenotype range within a population. (11) 5. The placewhere an organism normally lives, characterised by physical conditions and the other species present. (7) 7. The evolution of two or more species from existing species (10) 8. An ecological factor that makes up part of the non-biological environment of an organism. (7) 9. A species that can colonise bare rock or ground (7) 10. A group of similar organisms that can breed together to produce fertile offspring (7) Down 1. An ecological factor that makes up part of the living environment of an organism. (6) 2. The position of an organism in a food chain (7, 5) 3. Process that results in the best-adapted individuals in a population surviving to breed and pass on their favourable alleles to the next generation (9)
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