Ecosystems
Across
- 5. Animal that consumes carcasses of dead animals
- 7. Organism that breaks down dead & decaying plants & animals, producing detritus
- 9. A model showing amount of energy or material in each trophic food chain or food web level
- 11. Each step in a food chain or food web
- 12. Also called primary producer. It captures energy from nonliving sources and convert it to forms living cells can use
- 13. A series of organisms in which energy is transferred from one to another
- 17. Bacterial process converting soil nitrogen compounds into nitrogen that escapes into the atmosphere
- 18. Elements organisms need to sustain life
- 21. Also called heterotroph. It acquires energy from other organisms by eating them
- 22. Chemical energy powers production of carbohydrates (food) by these organisms without energy from the sun
Down
- 1. Any nutrient whose supply limits productivity
- 2. Organism that breaks down detritus & decomposers
- 3. Also called consumer. It acquires energy from other organisms by eating them
- 4. Grazing animal that only eat plants
- 6. Coal,oil, and natural gas fuels
- 8. Bacterial process converting soil nitrogen into nitrogen compounds plants can use
- 10. Aquatic primary producers, commonly algae, eaten by zooplankton
- 14. Also called autotroph. It captures & stores energy from nonliving sources and convert it to forms living cells can use
- 15. Animal that kills then eat other animals and doesn't eat plants(Figure 33-2)
- 16. Total amount of living tissue within a trophic level
- 19. A network of feeding interactions between multiple food chains
- 20. Animal, like humans, that eats plants & animals