Exam 15: Water Resources

What is one outcome of China's Three Gorges project? 

What is one means of achieving desalination? 

What consumes the largest portion of water on a global basis? 

What consumes the most water in Canada? 

Where is the world's fourth-largest freshwater lake,the size of which has been decreased by almost 90% to provide water for agriculture? 

Stream channelization decreases erosion rates.

What percentage of all drinking water in worldwide is pumped from aquifers? 

WATER -Which letter in the diagram corresponds to the graph that represents the total amount of freshwater in the world?

Groundwater moves at a rate of no more than 30 centimetres per year.

What is water scarcity called that occurs due to increasing numbers of people relying on fixed levels of runoff? 

Shifting displaced fishermen to logging would improve the Aral Sea's ecological/economic situation.

What is subsidence? 

What exemplifies the relationship between water demand and policies that subsidize crops requiring large amounts of water? 

What percentage of the world's irrigation water is wasted? 

To tap the ____________________ in an aquifer,a well is dug until it reaches the top layer of the aquifer.

Channelization speeds up water flow but also disturbs the migration and spawning of some fish species.

The ______________________________provides massive amounts of water to urban and rural developments in dry climates.

Which condition in the Himalayan watershed contributes to flooding in Bangladesh? 

A(n)____________________ is a flat tract of land bordering a river,mainly at the lower reaches,and is formed by the flow of water downstream.

Nova Scotians are the biggest users of fresh water in Canada.