F215 Module 3 4.5 / 5 based on 3 ratings ? BiologyA2/A-levelOCR Created by: HannahCreated on: 03-01-13 19:29 91026813745 Across 1. A stage of succession (4) 4. The role an organism plays in its ecosystem (5) 5. The source of energy for food chains (3) 6. The maximum population size that can be maintained over a period of time (8, 8) Down 2. Competition between species (13) 3. All biotic and abiotic components working together in balance with the environment (9) 7. The place where an organism lives (7) 8. The level at which an organism feeds in a food chain (7, 5) 9. The first group of organisms to colonise in primary succession (7, 9) 10. A stage of succession where the climax community can not be reached (12)
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