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is earth a closed or open system?
matter and energy freely transfer between them
are the four subsystems closed or open systems?
gaseous envelope that surrounds the Earth and constitutes the transition between it and the vacuum of space
comprises the solid Earth and includes both Earth's surface and the various layers of the Earth's interior
includes all water on earth (surface and ground)
the life zone of the Earth and includes all living organisms, and all organic matter that has not yet decomposed
where did the word atmosphere came from and what is its meaning?
atmos - air
is a great big blanket of insulation, absorbing the heat from the Sun and keeps the heat inside the atmosphere helping the Earth to stay warm
effect absorbing the heat from the Sun and keeps the heat inside the atmosphere helping the Earth to stay warm
how many percentage of nitrogen and oxygen?
79% and 21%
why is earth considered good?
- enough distance from the sun
- water can be liquid, solid, gas
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