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問BIO 2000 CE MC Q.45

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• 07年 CE PHY M.C. answer
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• 簡單方程式@1@

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問BIO 2000 CE MC Q.45 可唔可以解釋下個答案問黎?

最佳解答:

BIO 2000 CE MC Q.45 Oxygen is provided by the plants . Carbon dioxide is provided by the the animals ,and water stays in the bottle . Yet energy is constantly being used up . Light is constantly needed to keep the ecosystem in good condition. ?°o?°●╔╦╗ ╔╦╗ ╔╦╗ ╔╦╗○?°o?° ?°o?°○╠希╣.╠望╣.╠幫╣.╠到╣你 啦~● ?°o?° ?°o?°●╚╩╝ ╚╩╝ ╚╩╝ ╚╩╝○ ?°o? ∴☆ ╭╯╰╮ ﹒☆☆°．﹒☆?°∴°﹒°☆． 2007-07-14 13:10:24 補充： Aswer :A

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