题目
题目
未知题型

If neither species can live without the other, this a case of mutualism. In contrast, in mutualism, the interaction is beneficial, but not essential, to the survival and reproduction of either species.

选项
A.空白1
B.空白2
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思路分析
The prompt presents a two-blank statement about types of mutualism and asks you to fill in the blanks with the appropriate terms. Option for blank 1 (the first blank): 空白1. The clue is 'If neither species can live without the other, ...' This describes a relationship where each species depends on the other for survival, which is characteristic of obliga......Login to view full explanation

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