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A river changes its flow pattern as it goes downstream.

The water discharge of the river going downstream increases because the tributaries (streams, smaller rivers) join in to form a massive river that can range from a few feet to miles wide.

The efficiency of the river flow decreases because the water from other sources join in, thus mixing in pollution and other fishes that thrive the area.

The friction of the water increases because of the movement of the water that joins together, thus producing more current and energy for the water to flow downstream.

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16y ago

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