Across
- 2. COMPONENTS – Nonliving factors such as water, light, and temperature.
- 11. – A systematic body of knowledge based on observation and experimentation.
- 13. METHOD – A systematic way of gaining knowledge through observation and testing.
- 14. – Excessive growth of algae and aquatic plants.
- 16. – Process that converts carbon dioxide into organic carbon.
- 17. – Study of the geographic distribution of organisms.
- 22. – Advocacy for protecting the natural environment.
- 24. CYCLE – Natural pathway by which essential elements circulate.
- 25. – A possible answer to a scientific question.
- 27. – Freshwater stored beneath Earth's surface.
- 28. SCIENCE – The study of people, culture, and society.
- 29. – Study of energy.
Down
- 1. ECOLOGY – Studies factors affecting population size and composition.
- 3. – One of the central characteristics of the scientific method.
- 4. – All populations of different species living together.
- 5. – Place where materials are stored.
- 6. – The second most abundant element in living organisms by mass.
- 7. COMMONER – Founder of modern ecology.
- 8. TIDE – Common name for harmful algal blooms.
- 9. – Process of removing salt from seawater.
- 10. – Element found in nucleic acids, ATP, and phospholipids.
- 12. – Study of the interactions between organisms and their environment.
- 15. – A well-supported explanation of why things happen.
- 18. – Using the senses to gather information.
- 19. SCIENCE – The branch of science that studies the natural world.
- 20. – The ability to do work or transfer heat.
- 21. – The solid outer layer of Earth.
- 22. – Includes all living organisms and nonliving components in an area.
- 23. COMPONENTS – Living organisms found in an environment.
- 26. RUNOFF – Flow of freshwater across land.