If Changing conditions lead to the decreased ocygen levels in the stream the carrying capacity of the stream for the trout will decreace oxygen levels in water is therefore a ________ with respect to the number of trout that a particular stream can support.
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The blank can be filled with the term "limiting factor" with respect to the number of trout that a particular stream can support.
To understand why "limiting factor" is a suitable term, let's break down the question and its context:
The question mentions that changing conditions lead to decreased oxygen levels in the stream. Oxygen is crucial for the survival of trout, as they require it to respire and thrive in the aquatic environment. Therefore, the availability of oxygen in the water directly affects the carrying capacity of the stream for trout.
The term "carrying capacity" refers to the maximum population size that an environment can sustain indefinitely, given the available resources. In this case, the resources include the necessary oxygen levels in the water. When the oxygen levels decrease, it becomes a limiting factor for the trout population as it constrains their ability to survive and reproduce.
Hence, the decreased oxygen levels make it difficult for the stream to support a large number of trout, making it a limiting factor in terms of trout population.