Across
- 1. The process used to test a hypothesis.
- 2. Process that converts carbon dioxide into organic carbon.
- 5. Asking questions based on observations is called ______ and exploring.
- 6. Scientific rule that describes patterns in nature.
- 7. Well-supported explanation based on repeated testing.
- 8. Living components of an ecosystem.
- 9. The movement of water through plants and into the atmosphere.
- 11. Process in which sulfur falls directly from the atmosphere.
- 15. Water stored beneath Earth's surface.
- 16. The ability to do work or move objects.
- 17. A component of nucleic acids, phospholipids, and ATP.
- 19. Organized body of knowledge obtained through observation and experimentation.
- 21. Scientist known as the founder of modern ecology.
- 23. The First Law of Thermodynamics states that energy cannot be ______.
- 26. Non-living components such as air, water, and soil.
- 27. Second most abundant element in organisms by mass.
- 28. First step of the scientific method using the senses.
- 29. According to the Second Law of Thermodynamics, this always increases in natural systems.
- 30. The ultimate source of energy for almost all life on Earth.
Down
- 1. Study of the interactions between organisms and their environment.
- 3. An essential element for molecules of living things.
- 4. Process of removing salt from seawater.
- 10. The protective blanket of gases surrounding the Earth.
- 12. Study of energy and its transformations.
- 13. just a 15x15 crossword puzzle)
- 14. The law stating that everything is connected to everything else.
- 18. A possible explanation that can be tested.
- 20. Resources such as oil and coal.
- 22. Resources like plants and animals that can naturally replenish.
- 24. Process in which bacteria convert nitrates into nitrogen gas.
- 25. A harmful algal bloom that can kill marine life.