Title English:
underground economy
Definition English:
Groundwater (or ground water) is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. Groundwater is often cheaper, more convenient and less vulnerable to pollution than surface water. Therefore, it is commonly used for public water supplies.
Title Arabic:
اقتصاد سري
Domain:
Sustainable Development
Subject:
Water Resources
InformationType:
Term
SourceSymbol:
language staff
Link: