Environmental Science

3. Process where plants release water vapor into the atmosphere.
6. Study of relationships between organisms and their environment.
9. The first step of the scientific method.
12. Solid outer layer of Earth.
14. Gas that makes up about 78% of Earth’s atmosphere.
16. Practice of converting waste into useful materials.
17. Process where plants convert carbon dioxide into food.
18. Excessive growth of algae caused by nutrient enrichment.
20. SEGREGATION Separation of waste into different categories.
21. Sphere where all living organisms exist.
25. Process that converts nitrates back into nitrogen gas.
26. The ability to do work.
27. Process where water vapor forms clouds.
28. Process that changes liquid water into water vapor.
29. RAIN Rain made acidic by sulfur dioxide.
30. Organized body of knowledge gained through observation and experimentation.

1. Living components of an ecosystem.
2. Layer of gases surrounding Earth.
4. All the water found on Earth.
5. Non-living components of an ecosystem.
7. COMMONER Founder of modern ecology.
8. SCIENCE Scientific study of interactions between living organisms and their environment.
10. TIDE Common name for a harmful algal bloom.
11. A testable explanation for an observation.
13. FIXATION Process of converting nitrogen gas into ammonia.
15. CYCLES Natural pathways that recycle essential elements through the environment.
19. Water falling from clouds to Earth.
22. Gas released by plants during photosynthesis.
23. The second most abundant element in organisms by mass.
24. OF ENERGY Law stating that energy cannot be created or destroyed, only transformed.