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First section of unit 3 review, it is also important to know how the spheres interact with each other!
What is a system?
A network of relationships among parts/elements/components that interact with one another through the exchange of matter, energy, and information
Hydrosphere
All water on Earth, including oceans, rivers, and vapors
Geosphere/Lithosphere
Solid Earth with mountains, continents, and geological processes
Atmosphere
Outermost layer with gasses vital for life and climate regulation
Cryosphere
Frozen water, crucial for climate/sea level regulation
Biosphere
The realm of all living organisms supporting life
Note 
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