Across
- 2. type of ocean phytoplankton
- 3. organisms whose cells have a nucleus and are enclosed by membranes
- 5. when a species releases eggs or sperm into the the water
- 6. reason from specific observation to a general conclusion
- 7. the total amount of salts dissolved in seawater
- 8. reasoning from general principles to specific conclusions
- 10. bluish pigment found in photosynthetic organisms
- 11. the set of procedures by which scientists learn about the world
- 15. living things that use energy to maintain stable internal conditions
- 16. equipment that allows breathing underwater from tanks of compressed air
- 17. deadly toxin found in a certain species of fish
- 19. organisms whose cells do not have a nucleus
- 22. contain chlorophyll and appear a golden pigment
- 23. type of respiration (reverse of photosynthesis
- 25. the downward movement of a plate into the mantle that occurs in trenches
- 26. used by algae for movement
- 27. the light coloured rock that forms most of the continental crust
- 28. the movement that results when heat is transferred in a fluid
Down
- 1. important food source for filter feeders
- 4. the chemical process involved in the release of energy from organic matter
- 9. the chemical process involved in the transformation of solar energy into glucose
- 12. blue-green algae
- 13. obtain energy from organic matter that already exists
- 14. "self feeders"
- 16. loose materials such as sand and mud that settles on the bottom
- 18. a technique or equipment used to locate objects underwater by detection of echoes
- 20. the smallest unit into which an element can be divided and still retain its properties
- 21. a zone in the water column that shows a sudden change in temperature with depth
- 22. type of algae that are dinoflagellates
- 24. a crack in the Earth's crust usually formed when 2 pieces of crust are moving past each other
