Crossword

2. an organism living as a parasite
5. the regions of the surface, atmosphere, and hydrosphere of the earth
15. a system of interlocking and interdependent food chains
17. a non living part of an ecosystem that shapes its environment
18. the natural home or environment of any organism
20. animals that are killed and eaten by other animals
21. any organism that breaks down or eats decaying material for its energy source
23. an organism that mostly consumes decaying meat
24. a group of living things that live together

1. all the inhabitants of a particular town, area, or country
3. an animal that feeds on flesh of other animals
4. a larger organism that harbours a smaller organism
5. the living components that shape up the environment
6. a single celled life form
7. a hierarchical series of organisms each dependent on the next as a source of food
8. organisms that hunt and kill other organisms for food
9. a branch of biology that deals with the relations of organisms to one another and to their physical surroundings
10. organism that can make their own food
11. an animal that feeds on plants
12. an organism that eats food of both plant and animal origin
13. a biological community of interacting organisms and their physical environment
14. must eat other plants and/or animals to get energy
16. an organism that is able to form nutritional organic substances
19. the position of and organism in the food chain
22. an organism deriving its nutritional requirements from complex organic substances