Question

why is there a shortage of water even though almost three fourth of the Earth is covered with water ?

Answer 1

because most of water present on earth is saline water and only a few countries have a technology to convert saline water to fresh water.
Moreover the resources for fresh water are less and and drying due to increase of greenhouse gases and rapid increase in population

Answer 2

Answer:Water scarcity can be a result of two mechanisms: physical (absolute) water scarcity and economic water scarcity, where physical water scarcity is a result of inadequate natural water resources to supply a region's demand, and economic water scarcity is a result of poor management of the sufficient available water

Explanation: