Question
What percentage of the total water available on Earth is actually used by humans?
Answer: Option A
:
A
Though 71% of the Earth's total surface is covered with water, it is largely in the form ofoceans and seas.Thiswater is saltyandcannot be used fordaily activities by humans. Only 2.5-2.75% is fresh water, including 1.75-2%, isfrozen 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.And of this fresh water, the actual amount of water that is directly available and safe for usefor humans, i.e., usable freshwater,is only around 0.006%.
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:
A
Though 71% of the Earth's total surface is covered with water, it is largely in the form ofoceans and seas.Thiswater is saltyandcannot be used fordaily activities by humans. Only 2.5-2.75% is fresh water, including 1.75-2%, isfrozen 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.And of this fresh water, the actual amount of water that is directly available and safe for usefor humans, i.e., usable freshwater,is only around 0.006%.
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