Earth Subsystem

6. A layer of gases surrounding an astronomical object, secured by the object's gravity.
8. The study of weather and atmospheric conditions
11. the region of the Earth where life exists, and its components, functions, and benefits.
12. The Earth's central part, consisting of a liquid outer core and a solid inner core, mainly made of iron and nickel.
13. Study of Earth's oceans
14. The shaking of the ground caused by movement beneath the Earth’s surface.
17. The process by which plants and certain other organisms convert light energy into oxygen and organic compounds.
18. The lowest layer of the atmosphere, where weather occurs.
19. The preserved remains or imprint of a prehistoric organism in rock
20. The long-term average of weather patterns in a particular region.

1. The Earth's outermost layer.
2. It encompasses all surface and frozen waters, groundwater in soil and rock, and atmospheric water vapor.
3. The layer between the crust and core, composed of slowly flowing semi-solid rock.
4. An opening in the Earth’s surface where lava, ash, and gases can escape.
5. The force that pulls a body toward the center of the Earth or any other object with mass.
7. The processes that shape and alter the Earth's crust over time.
9. Planets made mainly of silicate rocks or metals.
10. Includes Earth's rocks and minerals, from molten rock and metals deep within to beach sand and mountain peaks.
15. A group of living organisms engaging with their surroundings
16. The daily state of the atmosphere, including temperature, rain, and wind.