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Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers. Freshwater lakes contain about 87% of this fresh surface water, including 29% in the African Great Lakes, 22% in Lake Baikal in Russia ...
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.
Water stress is the ratio of water use relative to water availability and is therefore a demand-driven scarcity. [ 1] Water scarcity (closely related to water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical.
PwC. PricewaterhouseCoopers International Limited[ 4] is a British multinational professional services brand of firms, operating as partnerships under the PwC brand. It is the second-largest professional services network in the world [ 5] and is considered one of the Big Four accounting firms, along with Deloitte, EY, and KPMG.
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 ...
The great majority of the rural community water supply relies on groundwater through shallow wells, deep wells and springs. [5]: 6 Data from 2012 estimated that 70% of domestic water use in rural Ethiopia is supplied by groundwater, and large cities like Addis Ababa get up to 40% of water supply and industrial water use from groundwater. [13]
Access to an improved source of water supply increased only slightly from 77% in 1990 to 81% in 2010, whereas coverage of improved sanitation increased from 39% to 46% during the same period. [31] As of 2010, 67% of Bangladeshis had a permanent water source and a majority of them used tube wells.
A shift of 1 or 100% (darker colours) indicates that the region has fully moved into a completely different biome zone type. [1] Climate change is already now altering biomes, adversely affecting terrestrial and marine ecosystems. [2] [3] Climate change represents long-term changes in temperature and average weather patterns.