题目内容：
对于一个稳定的森林或草原生态系统来说，其组成成分中，唯一可缺少的成分( )
A.生产者
B.消费者
C.分解者
D.无机环境
参考答案：
选择题：对于一个稳定的森林或草原生态系统来说,其组成成分中,唯一可缺少的成分( )
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- 题目类型：选择题
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