Across
- 1. the study of interactions among living things and their surroundings
- 4. organisms that get their energy from eating other living or once-living resources
- 5. a sequence that links species by their feeding relationships
- 7. a consumer that primarily eats one specific organism or fees on a very small number of organisms
- 11. the levels of nourishment in a food chain
- 13. detritivores that break down organic matter into simpler compounds
- 14. organisms that eat only plants
- 16. a model that shows the complex network of feeding relationships and the flow of energy within and sometimes beyond an ecosystem
- 18. another name for consumers
- 19. consumers that have a varying diet
- 22. a species that has an unusually large effect on its ecosystem
Down
- 2. organisms that eat both plants and animals
- 3. organisms that get their energy from nonliving resources, making their own food
- 4. a group of different species that live together in one area
- 6. organisms that eat dead organic matter
- 8. all of the organisms as well as the climate, soil, water, rocks, and other nonliving things in a given area
- 9. the process by which an organism forms carbohydrates using chemicals, rather than light, as an energy source
- 10. another name for producers
- 12. organisms that eat only animals
- 15. a major regional or global community of organisms
- 17. factors that are living things, such as plants, animals, fungi, and bacteria
- 20. a measure of the total dry mass of organisms in a given area
- 21. factors that are nonliving things such as moisture, temperature, wind, sunlight, and soil
