Natural Systems

What is an input?
When matter on energy is added to the system
When matter or energy leaves the system
Where matter or energy leaves the system
What is an output?
When matter or energy is added to the system
When matter or energy leaves a system
The limits of a system
What is a store
The limits of a system
Where matter or energy builds up
Where matter leaves the system
What is an Open system?
Energy and matter can enter or leave the system
Energy can enter the system but matter can't
What is a negative feedback?
Mechanisms that counteract the change in inputs and outputs
Mechanisms amplify the change in inputs and outputs
What are the subsystems within the water cycle?
Lakes, oceans, rivers
Atmosphere, Ice, rivers
Lithosphere, biosphere, Atmosphere
Lithosphere, Biosphere, Hydrosphere, Cryosphere, lithosphere
What system is the earth's system?
Closed
Cascading
Open
Symbiotic
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