题目内容：
一定地段上，多物种所组成的天然群聚即为（）。
参考答案：
填空题：一定地段上，多物种所组成的天然群聚即为（）。
- 题目分类：农学
- 题目类型：填空题
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—The audience ______ dressed in a variety of ways, some in suits and dresses,...
—The audience ______ dressed in a variety of ways, some in suits and dresses,...
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