Ecology

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Across
  1. 1. The feeding positions in a food chain or web
  2. 3. A group of living organisms that can interbreed and produce fertile offspring
  3. 7. Organisms that obtain their energy from dead organisms
  4. 8. A diagram that represents feeding relationships in a particular ecosystem, i.e. they model how energy moves through ecosystems
  5. 9. One living individual
  6. 10. The study of relationships between living organisms and between organisms and their environment
  7. 13. The increased concentration of a poison, such as pesticides, in the tissues of tolerant organisms at successively higher levels in a food chain
  8. 15. The introduction into the environment of a substance that is harmful
  9. 18. The role in which a species normally performs or the job of a living organism
  10. 21. Animals that only feed on other animals
  11. 22. The gradual accumulation of substances, such as pesticides or other poisons, in an organism
  12. 23. All the chemical reactions taking place in an organism
  13. 24. A scientist that studies ecology and different ecosystems
  14. 26. Organisms that obtain their energy from other organisms by feeding
  15. 27. Typically the animals that get food by eating other living organisms
  16. 28. The living components of an ecosystem
Down
  1. 2. Typically the green plants and algae that make their own food
  2. 4. Any particular area that contains a living community and its non-living environment
  3. 5. A diagram that shows the flow of energy for a particular set of feeding relationships in an ecosystem, i.e. a single pathway by which energy flows through an ecosystem
  4. 6. A group of microorganisms related to bacteria that are capable of photosynthesis
  5. 11. Organisms that get their energy from the abiotic environment e.g. photosynthesis
  6. 12. The amount of living or organic matter present
  7. 14. The non-living components of an ecosystem
  8. 15. A group of organisms of the same species living in the same area at the same time
  9. 16. Animals that feed on both plants and animals
  10. 17. Organisms that break down dead organisms and
  11. 19. Animals that only feed on plants
  12. 20. A particular environment in which a species normally lives or the home of a living organism
  13. 25. A group of different populations that live and interact with each other in a particular ecosystem