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River Systems and Functions

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Questions and Answers

What is the primary function of a river?

To provide drinking water only

To facilitate navigation and industrial production

To transport freshwater towards an ocean, lake, sea, or another river (correct)

To serve as a religious entity

Which is not a common characteristic of a river system?

Part of the hydrological cycle

Release of stored water in natural ice and snowpacks

Recharge from surface runoff and groundwater only (correct)

Precipitation through a drainage basin

Where does River Nile begin?

As the water flows out of Lake Victoria (correct)

As a spring high up on the moorland

As small streams originating in Banjaran Titiwangsa

From a melting glacier

What are the uses of water by mankind mentioned in the text?

A wide range of activities including drinking, agriculture, navigation, and industrial production Signup and view all the answers

Where does River Derwent in England begin?

As a spring high up on the moorland Signup and view all the answers

What is the source of River Jökulsa a Fjöllum?

Melting glacier Signup and view all the answers

What is considered the most suitable medium to clean, disperse, transport, and dispose of wastes?

Low (base) flows Signup and view all the answers

What user function requires the most sophisticated demands on water quality?

Drinking water supplies Signup and view all the answers

What is one of the ecological functions of large floods according to Postel & Richter (2003)?

Provide migration and spawning cues for fish Signup and view all the answers

What is an ecological function of high pulse flows?

Enable recruitment of certain floodplain plants Signup and view all the answers

Which river flow level enables fish to move to feeding and spawning areas?

Low (base) flows Signup and view all the answers

What happens during drought level river flow according to Postel & Richter (2003)?

Concentrate prey into limited areas to benefit predators Signup and view all the answers

What is an ecological function of low (base) flows according to the text?

Keep fish and amphibian eggs suspended Signup and view all the answers

What do large floods do according to the text?

Disburse seeds and fruits of riparian plants Signup and view all the answers

What river flow level enables recruitment of certain floodplain plants?

High pulse flows Signup and view all the answers