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Is earth an open or closed system?

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2010-04-01 18:13:59
2010-04-01 18:13:59

both. For everything except energy, it's closed.

For energy (i.e. the sun's input, radiation into space at night) it's open.

One definition of a closed system is a system that can exchange energy with it's environment but not matter. Therefore the earth is a closed system by this logic.

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its not, its pretty open


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