Across
- 2. collection of organisms that live in a particular place
- 4. a group of organisms that can reproduce and produce fertile offspring
- 6. a complex diagram that shows the feeding relationships between all the organisms in an ecosystem
- 8. a diagram that shows the distribution of energy, organisms, or other resources in an ecosystem by trophic level
- 10. the sequence of transfers of matter and energy in the form of food from organism to organism.
- 13. a level or a position in a food chain, a food web, or an ecological pyramid
- 15. an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material
- 18. The study of living organisms, including humans, and their physical environment
- 19. a renewable organic material that comes from plants and animals and can be used as an energy source
- 21. the process by which food is made by bacteria or other living things
- 22. can make there own food
- 23. another word for autotroph
Down
- 1. only eats plants
- 3. an animal which feeds on dead organic material
- 5. doesn't make there own food
- 7. all life on earth
- 9. only eats meats
- 11. another word for heterotroph
- 12. plants prcess
- 14. eat meats and plants
- 16. assemblages of different populations that live together
- 17. the total number of people or other inhabitants in a specific area
- 20. a group of ecosystems that have the same climate