What was the Karez well system?

What was the Karez well system?

The Karez Well System is an important ancient irrigation system that is still used in Turpan, Xinjiang, in Northwest China. (Karez is the Uyghur word for ‘well’, from the Persian for ‘channel’.) Locals dug wells and tunnels to transfer water from mountains miles away from their farmland.

Why is Karez system practiced in Balochistan only?

In Balochistan, social station is not determined by landholdings but by the size of one’s share of water in a karez. These manmade underground channels passively tap groundwater and provide the lifeblood of villages at the valley floor.

What can lead to groundwater shortages?

Groundwater depletion most commonly occurs because of the frequent pumping of water from the ground. We pump the water more quickly than it can renew itself, leading to a dangerous shortage in the groundwater supply.

Which of the following activities is most likely to result in sediment pollution?

Excess fertilizer use is most likely to result in nutrient pollution.

Which source of water pollution would be hardest to trace and control?

groundwater pollution

What are the major sources of water pollution?

This section gives information about the most significant sources of water pollution.

• Sewage (Waste Water) Sewage is another name for waste water from domestic and industrial processes.
• Agricultural Pollution.
• Oil Pollution.
• Radioactive Substances.
• River dumping.
• Marine Dumping.

What are three sources of pollution?

There are four main types of air pollution sources:

• mobile sources – such as cars, buses, planes, trucks, and trains.
• stationary sources – such as power plants, oil refineries, industrial facilities, and factories.
• area sources – such as agricultural areas, cities, and wood burning fireplaces.

What is the term for pollution that comes from an identifiable source?

Pollution originating from a single, identifiable source, such as a discharge pipe from a factory or sewage plant, is called point-source pollution. Pollution that does not originate from a single source, or point, is called nonpoint-source pollution.