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The total volume of water on Earth is estimated at 1.386 billion km 3 (333 million cubic miles), with 97.5% being salt water and 2.5% being freshwater. Of the freshwater, only 0.3% is in liquid form on the surface. [ 2][ 3][ 4] Because the oceans that cover roughly 70.8% of the area of Earth reflect blue light, Earth appears blue from space ...
China's fresh water resources include 2500 cubic kilometers of mean annual run-off in its rivers and 828.8 cubic kilometers of groundwater recharge.As pumping water draws water from nearby rivers, the total available resource is less than the sum of surface and groundwater, and this is only 2,821.4 cubic kilometers. 80% of these resources are in the South of China. [3]
The Polish today are well assimilated into American society. Average incomes have increased from well below average to above average today, and Poles continue to expand into white-collar professional and managerial roles. Poles are still well represented in blue collar construction and industrial trades, and many live in or near urban cities.
The 872 days of the siege caused extreme famine in the Leningrad region through disruption of utilities, water, energy and food supplies. This resulted in the deaths of up to 1,500,000 [ 79 ] soldiers and civilians and the evacuation of 1,400,000 more (mainly women and children), many of whom died during evacuation due to starvation and ...
In 2011, the United Nations' Joint Monitoring Programme for Water Supply and Sanitation estimated that only 55% of the Yemeni population had access to improved water source – including 40% from house connections and 15% from other improved water sources such as standpipes. Only 53% had access to improved sanitation.
about US$10 / capita (2006) in urban areas. [9] Water supply and sanitation in China is undergoing a massive transition while facing numerous challenges such as rapid urbanization, increasing economic inequality, and the supply of water to rural areas. [10] Water scarcity and pollution also impact access to water.