The statement that best explains why each river has its own set of characteristics is that Rivers interact with the ecosystems through which they pass.
Some of the characteristics of rivers that we can mention are :
As rivers flow downhill and flows into the ocean, It interacts with the environment, stripping it's minerals from the rocks and affecting the pH and chemical makeup of the water. The water that flows through the soil will erode the land and absorb the minerals in the soil as well. By affecting the pH of the river, this absorption will change the diversity of aquatic life present in the river. The length of the rIver can also depend on the limiting factors such as rocks or boulders present in the ecosystem through which it passes. Since every river pertains to its ecosystem, each will have it's own characteristics.
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