B4 Crossword

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Across
  1. 2. The process of water in clouds becoming heavy and falling as rain, snow or hail
  2. 5. A form of carbon excavated from the ground and used as a source of energy (two words)
  3. 6. A relationship where both organisms benefit
  4. 8. A small animal that shreds dead, organic material into smaller pieces
  5. 10. A non-living factor
  6. 16. The process of water moving through gaps in soils and rocks
  7. 18. An abiotic factor that affects the quality of soil
  8. 21. All of the living things and physical conditions in an area
  9. 22. The process by which carbon dioxide is produced from fossil fuels
  10. 26. The gas taken in from the atmosphere by plants for photosynthesis (two words)
  11. 27. An abiotic factor that controls the activity of enzymes and photosynthesis
  12. 28. The total number of organisms of a species
  13. 29. All the organisms within an ecosystem
  14. 30. Waste products produced by the body are usually lost through this process
  15. 31. A key element that is used to make DNA and protein
  16. 33. A type of bacteria that convert nitrogen from the air into a form that can be used by plants (two words)
Down
  1. 1. An abiotic factor that affects the success of plant species (two words)
  2. 3. A relationship between a prey and a predator
  3. 4. An organism that makes their own food via photosynthesis
  4. 7. The form of nitrogen that is released from dead plants and animals after decomposition
  5. 9. A carbohydrate made by plants during photosynthesis
  6. 11. An organism that must consume other organisms for energy
  7. 12. The name for each step in a food chain (two words)
  8. 13. One of the only processes that can take carbon dioxide out of the atmosphere
  9. 14. A relationship where one organism benefits and one suffers
  10. 15. A group of consumers that gain their energy from dead or decaying matter
  11. 17. How different organisms depend on each other within a community
  12. 19. The mass of living material in an organism
  13. 20. A type of interaction that takes place between organisms in an area when resources are limited
  14. 23. The area in which organisms live
  15. 24. The form of nitrogen that plants take up from the roots to make proteins and DNA
  16. 25. Undigested material that is usually lost as faeces
  17. 32. A living factor