Across 4. The area of land that water leaves to join at a single point; it sheds water. 6. Water sticks to other objects. 7. An educated guess; what you test during an experiment. 8. The winding parts of a river. 11. Water that sinks into the soil during precipitation. 12. Upward pressure exerted by bodies of water; helps stuff float. 13. Rain, Snow, Sleet, or Hail. 17. Plants take in this compound to produce oxygen and Glucose. Has it's own cycle. 19. The process by which plants take CO2 and water to produce Oxygen and Glugose. 21. Lightning helps "fix" this element for use by plants and animals. One of the four nutrient cycles. 22. The saltiness of water. 23. The variable that you manipulate to get data. 24. The type of filter that is plugged in and has a fan or other object to catch debris in tanks.

Down 1. Water becomes a vapor. 2. A type of pressure that increases as you dive into the ocean. 3. The type of filter that usually uses activated charcoal to clean the water of dangerous toxins. 5. The type of filter that relies on bacteria. 9. Water becomes a cloud. 10. A written tool that helps identify organisms using physical characteristics; always has two choices per set of choices. 13. Used as a fertilizer; one of the four nutrient cycles. Rocks. 14. Underground reservoir of water that exists in the layers of the soil/dirt. 15. Tree sweat; water is released as a gas from plant leaves to maintain termperature. 16. A force of push and pull in a molecule or some metals. 17. Water sticks to itself. 18. The variable that changes based on what is done to a test subject. 20. What humans breath during Aerobic Respiration.