A river begins high in the mountains and flows downstream until it finally discharges its water into an estuary.Compared to the river's characteristics at its origin, the river as it enters the estuary will be
A) faster flowing.
B) better oxygenated.
C) cooler and clearer.
D) broader and warmer.
E) freer of sediment.

Question

Quizplus · Accepted Answer

As the river flows downstream, it picks up more water and sediments from its surroundings, causing it to become broader and shallower. The temperature of the water also increases as it flows through warmer areas. Therefore, the river as it enters the estuary will be broader and warmer compared to its characteristics at its origin.

A River Begins High in the Mountains and Flows Downstream