Definitions: Communities and Ecosystems 4.0 / 5 based on 2 ratings ? BiologyEcology, ecosystems and environmental biologyInternational BaccalaureateNone Created by: Alice HaslettCreated on: 12-02-13 07:57 82341910567 Across 1. an organism that obtains organic molecules from other organisms (11) 5. an organism that synthesizes its organic molecules from simple inorganic substances (9) 6. a group of organisms that can interbreed and produce fertile offspring (7) 7. the study of relationships between living organisms and between organisms and their environment (7) Down 2. the environment in which a species normally lives (7) 3. an organism that lives on or in non-living organic matter, secreting digestive enzymes into it and absorbing the products of digestion (10) 4. the position that an organism occupies in a food chain or a group of organisms in a community that occupy the same position in food chains (7, 5) 8. a community and its abiotic environment (9) 9. the elaborate interconnected relationships within an ecosystem based on feeding and energy transfer (4, 3) 10. an organism that ingests other organic matter that is living or recently killed (8)
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