The Water Issue 70% of the earth's surface is covered by oceans, which contain over 97% of the water on the Earth(saltwater) Fresh Water is approximately 3% soi(0.41%) Rivers and lakes (0.82%) gRoundwater(20.58%) Of the freshwater found on Ice and glacier 7819%) Earth, only a tiny fraction is available for use Rivers anerlakes(0.02%)-T Soil(0.01%) Groundwater(0.50%) ice and glaciers(1.90%) Potable water: Unpolluted fresh water. suitable for Oceans (9757% drinking Total water
The Water Issue • 70% of the Earth’s surface is covered by oceans, which contain over 97% of the water on the Earth (saltwater). – Fresh Water is approximately 3% Of the freshwater found on Earth, only a tiny fraction is available for use. • Potable water: Unpolluted, fresh water, suitable for drinking
The Water Issue For most human as well as some commercial and industrial use, the quality of the water is as important as its quantity The shortage of potable freshwater increases in human populations(demand is increasing for freshwater for industrial, agricultural, and personal needs) and limitations on the supply available can also be directly attributed to human abuse in the form of pollution. (Water dissolves and carries substances from nutrients to industrial and domestic wastes). Water pollution has negatively affected water supplies throughout the world
The Water Issue • For most human as well as some commercial and industrial use, the quality of the water is as important as its quantity. • The shortage of potable freshwater: ----increases in human populations (demand is increasing for freshwater for industrial, agricultural, and personal needs) and limitations on the supply available; ----can also be directly attributed to human abuse in the form of pollution. (Water dissolves and carries substances from nutrients to industrial and domestic wastes) . Water pollution has negatively affected water supplies throughout the world
The Water Issue WHO estimates that about 25 percent of the world's people do not have access to safe drinking water would struggle with serious water shortage 70% of egas's surface revered by oceans, which containSover 97 percent of water. However, saltwater annot be consumed by humans or used for many industrial processes. of the world experiencing water shortage No vulnerabil國 Low vulnerability口 Medium vulnerability■ High vulnerability國 No data
The Water Issue • WHO estimates that about 25 percent of the world’s people do not have access to safe drinking water. Area of the world experiencing water shortage 70% of earth’s surface is covered by oceans, which contain over 97 percent of water. However, saltwater cannot be consumed by humans or used for many industrial processes. would struggle with serious water shortage
The Water Issue It was stated that water could becomes as a major source of world conflict a study by the United Nations in 2002 said that by 2025 one in three people globally could be threatened by shortage of freshwater Quantity of water: The availability of freshwater is highly depend on the amount of water that can be obtained from river, lake and the amount of groundwater Quality of water: Water pollution control
The Water Issue • It was stated that water could becomes as a major source of world conflict. • A study by the United Nations in 2002 said that by 2025, one in three people globally could be threatened by shortage of freshwater. • Quantity of water: • Quality of water: The availability of freshwater is highly depend on the amount of water that can be obtained from river, lake and the amount of groundwater. Water pollution control
Hydrologic cycle All water is locked into a constant recycling process Hydrologic cycle Condensatio Solar energy evaporates of clouds recipitation Solar energy water Evapotranspiration from-leaves Transpiration -Plants Rair Evaporation vaporation from ground giving off water Warm, moist air rises Water Evaporation.) cools, condenses, and table Surfac fromoceans falls as precipitation inoff Some precipitation Groundwater Ocean remains on the surface and evaporates, while most sinks into the soil or returns to the oceans
Hydrologic Cycle • All water is locked into a constant recycling process - Hydrologic Cycle. – Solar energy evaporates water. – Transpiration - Plants giving off water. – Warm, moist air rises, cools, condenses, and falls as precipitation. – Some precipitation remains on the surface and evaporates, while most sinks into the soil or returns to the oceans