Across
- 2. Decomposition renews____materials necessary for energy to enter life through primary production; completes materials cycle
- 7. Most efficient photosynthesizes
- 8. _____depth is when the amount of carbohydrates produced by and autotroph equals the amount required for its respiration
- 10. Break down organic material into an inorganic form
- 11. Made of levels, showing how energy transfers from one level of organisms to the next as they consume each other
- 14. Consumes autotrophs/producers
- 17. Have an internal support structure of silica
- 20. Happens when an autotroph receives too much or too little light
- 23. Spend entire life as plankton
- 24. Silica cell wall of a diatom
- 25. Coastal temperate and subpolar regions are ocean regions that have the ___primary productivity
Down
- 1. Live part of their life as plankton
- 3. Has a rigid cell wall made of silica
- 4. Energy source for photosynthetic organisms
- 5. An organism that consumes primary consumers
- 6. Better represents the flow of energy in nature than a trophic pyramid
- 9. Responsible for most of the ocean's primary production
- 12. Have one or two whip-like flagella
- 13. Physiological or biological necessities that affect survival
- 15. Time of explosive reproduction and growth of plankton species
- 16. Percent of energy that transfers from each trophic level
- 18. Mass of living tissue
- 19. Also called cyanophytes, bacteria, with chlorophyll
- 21. Most efficient ecosystem on earth
- 22. A wide variety of organisms that share a habitat and lifestyle