How many trophic levels are there in the following food chain algae and rarr mosquito larvae and rarr dragonfly larvae and rarr trout?

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2026-02-07 17:05

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在给定的食物链中：藻类 → 蚊子幼虫 → 龙fly幼虫 → 鳜鱼，共有4个营养级。每个箭头代表一个捕食关系，从初级生产者（藻类）开始，依次是次级消费者（蚊子幼虫），三级消费者（dragonfly幼虫），最后是四级消费者（鳜鱼）。

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