Biology Crossword

1. A network of interconnected food chains
3. A class of things of the same kind and with the same name
5. Made up of all the populations of different species living and interacting with one another
6. A community of organisms interacting with one another and with their environment
11. The process by which ammonium compounds are converted to nitrates
12. The study of organisms and how they interact with the environment around them
13. Denitrification → Loss in drainage water → Absorption and protein synthesis → Nitrogen fixation → Nitrification → Decomposition
16. An organism that is consumed
19. Free-living soil bacteria
20. The process of reducing nitrate and nitrite to gaseous forms of nitrogen

2. To become rotten/decayed
4. An organism that makes its own organic food substances
7. A graphical representation showing the relationship between different organisms in an ecosystem
8. A place where an organism lives
9. The process by which green plants and other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
10. A group of organisms of the same species that live together
14. An organism that consumes another organism
15. A process in living organisms involving the production of energy
17. Photosynthesis → Feeding → Respiration → Decomposition → Formation of fossil fuels and combustion
18. Fourth in rank