NATURAL SYSTEMS

2. A community of organisms and their physical environment interacting as a system.
4. The global sum of all ecosystems; the zone of life on Earth.
5. Related to or resulting from living organisms.
9. The quality of having many interconnected parts.
11. Information from a system’s output that influences its future behavior.
13. The ability of a system to recover from disturbances.
14. When a small change can cause a large, unpredictable effect.
15. Constantly changing or in motion.
16. The average weather conditions in a region over time.
18. The ability of a system to remain unchanged despite external influences.

1. The process by which plants convert sunlight into energy.
3. Non-living physical and chemical components of an environment.
6. A close and long-term interaction between two different species.
7. The natural environment where an organism lives.
8. All the water on Earth, including oceans, rivers, and lakes.
10. The degree to which a system exchanges energy or matter with its environment.
12. A stable state where forces are balanced in a system.
17. A trait that improves an organism’s ability to survive in its environment.