Across
- 2. conversion of nitrogen gas into nitrogen
- 3. tides with large range that occur for a full and new moon
- 7. animals that eat organic matter that settles to the bottom
- 8. animals that actively filter food particles from the water
- 11. resource that is so scarce it restricts the growth of a population
- 12. one of the three main internal layers of the earth
- 15. organisms that manufacture organic matter from carbon dioxide
- 16. gas-filled sac that provides many bony fishes with buoyancy
- 18. colliding with another plate and has geological activity
- 19. all the different populations of organisms that live in a defined area
- 21. todal pattern in which two successive high tides are of different heights
- 22. difference in height between a high tide and the next low tide
- 23. amount of heat energy required to raise the temp of a substance
- 25. CO2 + H2O + sun energy -> organic matter + O2
Down
- 1. on the edge of a continent and has little activity
- 4. particles of dead organic matter
- 5. tides with small range that occur when moon is in quarter
- 6. elimination of one species by another
- 9. a rasping ribbon of small teeth that is present in most molluscs
- 10. tidal pattern with one high and one low tide each dau
- 13. the natural environment where an organism lives
- 14. tidal pattern with two high and two low tides each day
- 17. close associations between fungi and microscopic algae
- 20. a structure used by many seaweeds to anchor themselves to the bottom
- 24. molluscs whose shells consist of eight overlapping plates