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12 May, 20:55

Which of the following is true for the conservation laws of matter and energy? A. The sun plays a critical role. B. The nitrogen cycle is a good example. C. Earth is a nearly perfect closed system. D. The total amount of something remains the same.

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  1. 12 May, 23:06
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    I would say D. Because you cannot create or destroy matter or energy it always stays the same amount even if it changes form.
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