Across
- 3. All the populations of different species living and interacting with one another in a habitat.
- 5. A network of interconnected food chains.
- 7. community Different populations of plants and animals live together and interact within the same environment.
- 9. Organisms that get their energy by breaking down dead organisms, faces and excretory products.
- 12. The place where an organism lives.
- 13. Organisms that makes their own organic food substances.
- 14. Organisms that obtain energy and nutrients by feeding directly on plants.
- 15. Organisms obtain energy and nutrients by feeding on other animals.
- 16. A nutrient cycling consists of processes by which nitrogen is constantly removed from the soil and is eventually returned to it in the form of nitrates.
- 18. A group of organisms of the same species that live together in a habitat.
- 20. A diagram which allows us to compare the total energy in each trophic level of a food chain over a certain period of time.
- 21. Animals that feed on other animals.
Down
- 1. The position of an organism in a food chain, food web or ecological pyramid.
- 2. A series of organisms through which energy and nutrients are transferred, beginning with a producer.
- 4. A diagram which the producers are placed at the bottom, the primary and secondary consumers in the middle, and the tertiary consumers at the top.
- 6. A community of organisms interacting with one another and with its non-living environment.
- 8. Organisms that are not able to make their own food, they obtain energy and nutrients by feeding on other organisms.
- 10. A diagram which allows us to compare the mass of organisms present in each trophic level at a particular time.
- 11. A nutrient cycling made up by the various process by which carbon, in the form of carbon dioxide, is removed from and released into the environment.
- 17. The study of continuously interactions between organisms, and their surroundings (environment).
- 19. Animals that are eaten by other animals