Saltwater

4. Inherited characteristic that increases an organism's chance of survival
6. Oxygen the abundance of molecular oxygen in the atmosphere
8. Vent an opening in the sea floor out of which heated mineral-rich water flows.
10. Positively charged particle in the nucleus of an atom
11. Current stream of either cold or warm water that moves in a definite direction through an ocean
12. the mixture of river water and seawater in estuaries
13. Tectonic Theory Theory that the lithosphere is made up of moving tectonic plates
14. Seep a place in the ocean floor where nutrient rich, cold water oozes up from the earth's crust
15. Method A logical, systematic approach to the solution of a scientific problem
17. Attraction between molecules of different substances

1. photosynthetic algae found near the surface of the ocean
2. excessive nutrients in a lake or other body of water, due to runoff from the land, causing a dense growth of plant life and death of animal life from lack of oxygen.
3. A substance that forms when carbon dioxide is removed from water and used by marine organisms to form calcium carbonate shells
5. the amount of salt in water
7. Pollution when harmful chemicals are added to water supplies
9. the upward movement of ocean water toward the surface as a result of diverging currents
15. Heat The heat required to raise the temperature of one gram of a substance one degree centigrade
16. Oil unrefined petroleum