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