Biodiversity 5.0 / 5 based on 1 ratingTeacher recommended ? GeographyEcosystems and biodiversity under threatA2/A-levelEdexcel Created by: Ellie ReidCreated on: 19-03-13 17:05 63981025147 Across 1. The variety and number of different species in one area. The more species the better functioning of the ecosystem. (7, 9) 7. Affect ecosystems on a smaller scale and their relative importance varies from place to place. (5, 7) 10. Energy is passed along through the ecosystem as food in a food chain or in a more complex food web. (6, 4) Down 2. All living things. (6) 3. The variety of living organisms in an environment. (12) 4. Individual members of a certain species that are found in an ecosystem. (10) 5. This is the surface layer of vegetation, which over time breaks down to become humus. (6) 6. Variety within a species from molecular level. The more variation in genetic make up the more easily populations are able to adapt to changing environments. (7, 9) 8. The total mass of living organisms per unit area. (7) 9. The entire variety of species that are found in an ecosystem. (9)
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